Conquering the 4-Month Sleep Regression: Part 2

*Apologies in advance for the length of this post! I tried to organize the info as best as I could.

When I left you in my last post, I shared how and why the 4-month sleep regression made me crazy. Now I wanted to share the things I tried that worked and didn't work, in the hopes of helping other desperate parents who are currently searching the Internet for a solution to this awful problem.

During the peak of my crazy behavior, I contacted Dr. Weissbluth. You might recognize the name from a popular sleep book, "Healthy Sleep Habits, Happy Child." We happen to belong to his pediatric office, and he offers sleep consultations as a benefit of that. I emailed him, filled out a sleep log for Liam and answered a questionnaire, and we had our consult over the phone a few days later. We were given a very strict set of rules that he promised would result in a sleeping baby in no time. However, the rules were just not something my husband and I were comfortable with. More on that later.

What the "rules" did do is prompt us to examine our current sleep habits. We were pleased to know that some of the rules were ones we were already following, as they made sense for our family. So, let's start with the problem. Liam needed to learn how to get himself back to sleep when he woke up. And he needed to learn how to do that without our help.

After our convo about having too many different plans of attack, we also discovered we were trying to conquer too many problems at once. We were trying to get Liam back in his crib, to get him to self-soothe, to get him out of the swaddle, AND stop relying on the pacifier. And we were trying to have him do all these things at once.
Remember: the changes from the regression are permanent, and they are just as hard on the baby as they are on mom and dad. They don't know why they can't go back to sleep, or how. They want to go back to sleep as much as you want them to. But they need our help in order to sleep without our help. Ya dig?

Our solutions 
Thankfully, we had created some good sleep habits with Liam prior to this regression. In all of my Googling, several of the "steps" to getting babies to sleep better were already things we were doing, so that made us feel like, YAY, we're doing something right. Those things were:
1. Put baby to sleep in his or her own room. This is a hard one to break if you have been sleeping with your baby in the same room. We had Liam sleeping in his Rock 'n Play in our room. After about 8-9 weeks, we felt like it would be better for everyone to be in our own rooms. So, we kept Liam in his Rock 'n Play, but moved it to his room. The transition went smoothly. Of course, I woke frequently and had to check on the baby to make sure he was breathing. (Which I still do, but much less now. :)) In any case, having the baby in his/her own room will likely lead to baby getting some independence, which will help in the long run of this regression.
2. Sleep should be in a dark room. We have black-out shades in Liam's room. But we also had a nightlight. Dr. Weissbluth recommended that the room be pitch black. So we got rid of the night light and even went so far as to put black garbage bags over the windows (under the blackout shades), so that no light crept in. I will say this has helped. We turn on the night light for feedings and to change him, but other than that, the light stays off, and Liam knows it's not time to wake up. (Also note, this has not affected Liam's ability to nap in his stroller or in the car or in other rooms when it can't be pitch black.
3. Use a white noise machine. We did this from day one when we got home from the hospital. It's been a lifesaver. Again, it's another thing that signals sleep to Liam, and comforts him. Don't think this had anything to do with getting over the regression, but it certainly has helped in establishing a sleep routine. Speaking of...
4. Establish a sleep routine. Babies crave routine. It's one of the only things that make sense in their little brains. When they know what to expect, it helps them (and most likely, you too). Our sleep routine starts with a bath. We then do lotion, jammies, a bottle, turn on white noise, put him in his swaddle (now sleep suit), turn off lights, rock for a few minutes, then we lay him down drowsy but awake. Most of the time, he is ready to go in the crib after the lights go out, and actually starts to fuss if we rock him because he just wants to snooze. (Cue tears for this mama who craves her baby snuggles!)
5. Put baby down drowsy but awake. This was something we started doing at around 6 weeks old, to the advice of our pediatrician. This helps instill the ability to have the baby fall asleep on his own. However, as we learned, there is a big difference in the baby knowing how to get TO sleep on his own and how to get BACK to sleep on his own. In any case, if they can do it once, it's likely they can do it again during the night with a little prompting.
So, knowing we were armed with some good sleep habits on our side definitely gave us a leg up on the regression. We continued to push these habits as best we could, even though it was hard at times.

Next, we needed to break some of our bad sleeping habits. 
6. Get an earlier bedtime. Prior to the regression, Liam had a bedtime of 9pm. He was taking 4 naps, with the last one being a short catnap around 6:30pm. We were not keeping him up late because we thought he would sleep later, or anything like that, that's just when he naturally began sleeping for the longest stretches. We learned early on that sleep begets sleep. As babies get older, they need more sleep. So now, the 9-10 hours of nighttime sleep were no longer cutting it--he needed 11-12.
I mentioned rules above that we weren't comfortable with: one of them was to put Liam to bed between 5:30-6PM. Acca-scuse me? Sorry, but as working parents who don't get home until that time, I'm not going to come home from work and only be around to put my baby to bed. We settled on a 7:30pm bedtime, and that has helped IMMENSELY. Some nights it's earlier, some nights it's later depending on the day, but it is always within an hour of that time. If you need help determining when to put your baby to bed, go here and enter your baby's age and wake up time.
7. Limit/Put an End to Sleep Associations. When I was doing all my research, one thing that really resonated with me was about sleep associations. Basically, if your baby NEEDS something in order to fall asleep, that *something* is a sleep association. Not all sleep associations are bad - the white noise machine and a dark room, for example, are good sleep associations. The swaddle, a pacifier, nursing to sleep, rocking to sleep - these are all also sleep associations.  The only time it becomes "bad" is when it disrupting everyone's sleep. 
The other thing that resonated with regard to sleep associations was the idea that in order to see progress with night-wakings, you should start with bedtime, and work up to night wakings. So if you don't want your baby to need/want to nurse to get back to sleep, don't have him fall asleep like that. So while Liam would go down easily, it was with the help of a pacifier and a swaddle. So when he got to the end of a sleep cycle and woke up and realized his paci was gone, he woke up crying and wanted it back. Makes sense, right?

First up was the swaddle. We chose to tackle this association first because at 4 months old and 16 lbs, he was starting to break free on his own anyway. It was only a matter of time before he rolled over in it. Also, we wanted him to be able to self-soothe if he lost his pacifier. But with his hands bound to his sides, it was impossible for him to be able to suck on his fist or hands as a way to get the same effect of the paci. We tried various ways to transition out of the swaddle. One arm or both arms out did not work for us - Liam continued to just flail his arms and hit his own pacifier out of his mouth.

We invested in Merlin's Magic Sleep Suit and a Zippadee-Zip. We tried both of those things at the before the regression and they weren't successful because Liam was just too little. Being that we knew a swaddle worked, we kept going with that until we had this revelation of "duh, he needs his hands to self-soothe." It was a couple weeks later when we tried the Sleep Suit again. Originally, we had been putting him in his crib in his suit, but that was still resulting in him crying after a couple of hours. So one night, we thought to put Liam in the sleep suit in his beloved Rock 'n Play (we'd deal with that later). He looked like a stuffed little sausage in there, but BEHOLD - he slept a solid 5 hour stretch before waking to feed, but then would go right back to sleep again. 

In the travel crib

Next, we needed to ditch the Rock 'n Play. Trust me, I wanted to keep Liam in there, but he is just getting too big, especially in his sleep suit. I began to worry that he would thrash at night and fall out. After about a week of successfully being out of the swaddle and in his sleep suit, we moved him to a Graco Travel Lite Crib, which is basically a smaller version of a Pack 'N Play. (That will likely work, too, we just happened to have one of these at our house because the boy we nanny share with naps in it.) We moved the smaller crib in his room and put him to bed in it. The idea being that maybe this small crib wouldn't feel so big and scary. Success again! We did this for another few days and then one night, decided to try the crib. Perfection: He's been sleeping in his crib, in his sleep suit ever since!

 In the crib

We saved the pacifier for last because we wanted to see if we could avoid having to get rid of the pacifier altogether. Thankfully, we didn't have to. He still goes down with a pacifier, and will *occasionally* wake up and fuss without going back to bed, in which case we go retrieve it for him. But we are happy to do that once a night. When we were having to do it every hour, that was another story. I will say that I also invested in different pacifiers. We were using the Wubbanub pacifiers, but he began pulling them out of his mouth. Plus, the nipple on those is straight. I bought Nuby and MAM pacifiers, which both have more natural shaped nipple, and he keeps them in his mouth much better.

All of this really boils down to sleep training. I always thought that sleep training meant "cry it out" and it doesn't have to. It's just helping your baby learn better sleep habits. It might involve some crying, or some fussing, but it doesn't have to be traumatizing. To take sleep training a step further, our last and final step was combining the following method every night, even (perhaps a better word is especially while) we were trying to correct sleep associations.
8. Let the baby fuss. Part of our issue was that, like any parents, we hated to hear Liam cry or fuss. At the first noise we heard, we were usually up and in his room within a minute. So we -- and really for this one, it was mostly me -- had to at least give him the opportunity to self soothe before we rushed to his aide. 
A pediatrician suggested that the first night of training, you do your nightly routine and put the baby in the crib while he's still awake but drowsy. If he cries, let him do so for five continuous minutes. After five minutes, go in to soothe, but try not to pick him up. Rub his tummy, talk softly, sing, whatever. After 5 minutes, leave again. Let him cry another five minutes, go back this until he falls asleep.

However, since Liam went down easily and it was more about the night wakings for us, we applied the same method but in the middle of the night. The first night, we only go into his room if he fussed for five straight minutes without being able to soothe himself. We'd go in, give back pacifier, or rub his belly. We did not pick him up unless he was screaming. The second night the interval for going in to soothe is 10 minutes. The third night the interval is 15 minutes. Of course, if Liam was not going back down easily or seemed truly upset, we always checked basic needs (poopy diaper, is he hot/cold, etc) before determining how we would deal with the wakeup.

Liam also was still waking for at least one nighttime feeding. I am totally fine nursing Liam in the middle of the night if he's truly hungry. The problem was, I couldn't tell if he was hungry, and thus would end up nursing him often during the regression because I knew it would get him to calm down (and I was introducing a new sleep association).

To battle this, I looked at our feeding log and determined when a "normal" feeding time was: usually between 2:30-3:30AM. When he woke up during the night and it was NOT during this timeframe, I would not feed him. If he did cry during his normal feeding time, I'd feed him and then put him back to sleep drowsy but awake. Try to have this be the only time you pick him up. If that's not possible for you, do your best to ONLY feed him during his feeding time. Eventually, Liam learned that crying wouldn't automatically mean he got to nurse. His overnight wakeups eventually consolidated to be during this "feeding time" and now, he RARELY wakes for this feeding anymore.

The results

I am happy to report that as of May 1, Liam is sleeping ALL NIGHT LONG. He will occasionally wake up once to eat, but most nights, has been sleeping through until it's time to get up for the day.

In retrospect

In the end, I just had to let go and realize that Liam is a baby. He's doing the best he can, and so are we. We can't *make* him do things - but we can give him the tools he needs and help teach him how so that he eventually gets the idea.

I'm really proud of my husband and I, and of Liam. Literally every time Liam wakes in the middle of the nigh and fusses, I feel such pride when I see him just go back to sleep, on his own, with no assistance. We were able to teach him that, to give him the tools he needed to sleep and let him figure out what to do from there.

I also learned that I can't control everything. That sometimes there  isn't a prescriptive answer. I think perhaps this was my first lesson in realizing that as a parent, I have to let Liam learn, succeed, fail and struggle. I have to let him learn how to do something by himself when all I really want to do is fix it, or do it for him. I know that I could go into his room at his first peep and rock him to sleep, or give his paci right away, but that doesn't help anyone.

If you've tried all of this and nothing works, have hope. Most people say the four-month sleep regression lasts 2-4 weeks. Perhaps your baby just needs time. My baby’s problems may have worked themselves on their own, regardless of us trying the above. But for my own sanity, having a plan gave me hope that the issue could be solved with some intervention on our parts.

Ultimately,  you should do what you are comfortable with and what works for your family. Yes, the changes from the regression are a good time to introduce good sleeping habits, and a good time to sleep train, but that doesn't mean you have to. Sometimes you just gotta follow the "whatever works" method.

Anyone have any other tips that helped them through? I'd love to hear them!


  1. I'm so gals that you figured out a routine that works for you. I can't imagine the stress and frustration you guys were going through. Now everyone can get their sleep :)

  2. I know it's been a bit since you posted this, but I have to thank you. We're in the middle of it with our second child. I swear my first didn't go through it (or I blocked it out...which is most likely what happened).

    Our daughter is waking up all night long. Soothing enough to go back to sleep, sleeping for 15-30 minutes, and then waking up again.

    Your post, especially about the frantic googling, really calmed me down. We literally do everything "right" (no swaddle, paci, or other sleep associations, put down drowsy but awake, white noise, etc). She can self soothe, but, man is this phase rough. I know it'll get better with time, but reading your two posts makes me feel like I'm not alone and to stop googling and just ride it out. So, thank you!

  3. Going through a version of this now and stumbled on your blog. Such a refreshing look at sleep! I must have blacked out all of this with our first daughter (or was too tired to remember) so your tips are so helpful on how to do mild training. Thanks!

  4. I have been searching everywhere for Dr Weissbluth stuff regarding his book.. Never thought to search his name. Finally I did today and your blog came up. Thanks so much for sharing. Our second son is about to be 5 months next week and we have been dealing with this for almost 3 weeks now. The last few nights have been the worst.

    This gives me hope and strategy bc I have some sleep associations we can work on slowly and I'm right in that same place with not swaddling! Curious.. If you see this.. Why did you decide against the Zippadee zip? I just tried the Wombie and it makes him so
    Mad he can't get his hands out. So curious if he can get to his hands with the sleep suit.

    1. Hi Casey! So glad you found me! The Zippadee Zip was just not of interest to my son because it didn't restrain him enough. I don't like that work, but he needed to still have his startle reflex stifled and the ZZ didn't do that for him. The Sleep Suit did that AND gave access to his hands so it sounds like it could be a winwin for you! Good luck!

  5. The best baby sleep guide for me is ebook by Susan Urban "How to teach a baby to fall asleep alone". It solved all sleeping issues since my son was born. I knew what to do to make him sleep better until he turned 3 months and then what to do to make him fall asleep on his own, we got rid of night feedings when he was 5 months old and the guide also helped us to make him nap longer than 15 minutes! I got the guide on this website:

    1. This was by far one of the most helpful books I have ever read. It's an easy and short read and I loved the guide because it's so clear, clever and simple in it's method. If you have a baby, you need to buy this. Sleep problems solved by reading this up. Thanks

  6. this guide is AMAZING! Finally some clear and fast instructions that make sense. We succeed after only 2 days. Much MUCH faster than we expected. Big thanks for sharing

  7. I so wish I had looked into this guide before I had my baby! Thanks so much for posting this title.

  8. Rachel, I know it's been awhile since you posted this, but thank you! This is exactly what we're going through right now! My 3 month old wakes up around 2:30 to feed, and then he keeps waking up the rest of the night. I'm thinking about buying the sleep suit but the only concern I have is transitioning him out of it down the road. How did you handle that? Were there any issues?

  9. I enjoyed reading this article. PLease continue publishing helpful topics like this. Regards, from beddingstock


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