You are puttering along, enjoying those snuggly soft baby cuddles.
Baby stops sleeping well.
You wonder what’s going on for a few days, start Googling, and pretty soon realize your little one is smack dab in the middle of the 4 month sleep regression.
This can also happen a tad early or a tad later than 4 months, but the idea is the same.
So, how do you know if baby is going through the 4 month sleep regression?
4-month sleep regression symptoms:
Baby might not have all of these, but still be going through the 4 month regression.
- Baby started waking frequently at night
- Naps become shorter (often 45 minutes in duration)
- Baby is much more fussy and acts sleep deprived
- Changes in feeding patterns
- Doesn’t transition through sleep cycles like before (wakes early or halfway through naps) and can’t seem to fall back asleep
- Overall, your baby’s sleep patterns have changed for the worse and there’s an overall lack of deep sleep
This is actually pretty common with 4 month old babies. Babies sleep patterns and biological rhythms, circadian rhythms, and sleep cycles are maturing.
This means baby is far more likely to wake up between sleep cycles, begin catnapping, and start waking up more frequently at night. They aren’t able to re-settle from one sleep cycle to the next.
But never fear, I’ll help you.
The 4 Month Sleep Regression
Before we go any further I think it’s important to realize the 2 main reasons babies go through the 4 month sleep regression.
If you’re trying to track these changes and make some new routines or habits, I suggest using our daily baby logs to get going.
Now, these are not the ONLY reasons, but they’re the two main ones.
- Baby has been a sleepy newborn, but didn’t learn the habits and skills needed to sleep on his own so now that he’s not as sleepy he can’t get to sleep (or stay asleep) on his own.
- Baby has learned how to sleep on his own and slept well until now, around 4 months, and is taking shorter naps. This is likely due to hunger and taking an approach to increase milk at this point will help.
Babies Go Through The 4 Month Sleep Regression Because They’re No Longer So Sleepy
So those early newborn days and weeks are so precious. Baby sleep easily and often and you pretty much feed him and he falls asleep and that’s that.
Around 4 months they are less sleepy, they need more wake time, and they stop falling asleep at the drop of a hat.
If you haven’t taught baby how to sleep on their own without you nursing or rocking them to sleep then this age is where it shows.
If you aren’t able to put them down in their crib drowsy but awake to sleep, they may have trouble getting and staying asleep.
This doesn’t mean what you did was wrong, but that four months and beyond is a different kettle of fish.
And it takes longer for baby to get into deep sleep so your tricks and hoops will now become much more involved.
“To put that in perspective, if you are holding your baby to sleep, you would need to hold her for at least 30 minutes to make sure she’s in deep sleep and then she might wake up 15 minutes later. Sound familiar?” Baby Sleep Site
Psst… wanna know the top 3 reasons babies don’t sleep and *exactly* how to fix them? Before you go out and hire a sleep consultant….
Get my free 3 part series and watch baby start sleeping better as soon as TONIGHT!
At 4 months, Doctors USED TO Recommend Rice Cereal…
In years past the 4 month sleep regression wasn’t quite as bit of a Thang for one good reason.
Moms started babies on rice cereal at this age!
➡️ So when the 4 month regression was related to hunger this nipped it in the bud.
Now, the American Academy of Pediatrics recommends exclusive breastfeeding until 6 months of age (source).
This means if baby is waking early and more frequently is to feed more often and build that milk supply up to the necessary levels.
Perhaps baby needs more frequent feeds for a few days or longer feeds at each nursing session.
Trial and error should help you get the right amount. And then, in a month or two, when you add solids or purees, you’ll be able to rule out hunger completely.
Follow your pediatrician’s advice, obviously, but be careful not to rule out hunger.
Click here for the free printable!
Baby Is Taking 45 Minute Naps
If baby used to nap for long stretches, but is now waking after 45 minutes, the first strategy you should run towards is feeding more often.
➡️ One of the major ways the 4 month old sleep regression shows itself is by babies waking up after only 45 minutes.
Assume that baby is hungry and simply feed baby as soon as he wakes. If you keep this up for a day or two and notice your baby doesn’t want to feed at these times, then it’s likely a sleep issue, not a hunger one.
If you keep this up for a day or two and baby seems to lengthen his stretches of sleep instead of continuing with the 45 minute intruder, then you have your answer.
Baby was hungry, your milk supply was low, baby was having a growth spurt, or all of the above.
What To Do When Baby Wakes After 45 Minutes:
- Throw out your routine for a few days and feed baby immediately after he wakes. Try to give baby a full feed and not let him fall back asleep while nursing, which can be contributing to sleep props as well as not getting to the more nutritious hind milk.
- After the few days are up, determine if baby was actually hungry during those extra fees. If yes, keep feeding baby until he passes through the growth spurt and your supply catches up to the demand.
- If after a few days you see baby wasn’t hungry for those feeds, you know you’re likely dealing with a sleep prop. This means you need to work on teaching baby to go to sleep on their own. (See my free email series on how to do just this, right here!)
- If baby seems to be waking up, but not irritable or fussy, then perhaps baby is getting plenty of catnaps throughout the day, but could take longer naps with a few routine tweaks. This might mean putting baby down to nap 10 or 15 minutes later than normal and seeing if that helps.
Baby Is Waking Frequently At Night
If baby used to sleep much longer stretches at night and has now stopped, hunger is nearly always the culprit.
I’ve heard said that around the 4 month mark you should move to 4 hourly feedings, but I personally don’t recommend this if you’re nursing because you aren’t able to track exactly how much milk they’re getting and this could make things significantly worse if it’s due to hunger.
However, if baby used to wake up every few hours at night and is now waking up more frequently and needing you to nurse him, rock him, or do something else to get him back to sleep then you’ve likely got a sleep prop on your hands.
The only way to get rid of a sleep prop is to replace it with a positive sleep association. I teach you how to do that here.
Steps To Take If Baby Is Waking Frequently At Night:
- Give full feeds where possible, don’t feed for two minutes then put baby back down. Try to coax baby to take as long a feed as possible.
- Make careful note of what is causing baby to wake up. Does baby want something particular to go back to sleep (to be held, fed, etc.). If this is the case, baby has a sleep prop and you’ll need to create a plan to wean baby from that.
- Realize that whatever is happening, you can find a solution, you will find a way, and that both mommy and baby were made to sleep long restorative stretches. You can get there.
How to beat the regression (summary)
- Give baby full feeds.
- Cluster feed in the early evening when milk supplies are low.
- Help baby transition through sleep cycles.
- Help soothe baby to avoid over tiredness.
- Feed as often as baby wants, always focusing on full feeds.
Need Step By Step Help For Your Baby’s Sleep Issues?
If you are struggling with baby sleep and need a bit of hand holding, I recommend you take my free series on the biggest issues causing babies to not sleep well.
The series will touch on these main points that’ll help you take baby from waking a lot and not napping well to a calm peaceful sleeper.
- The #1 reason babies don’t rest well and exactly how to fix this quickly – you can see results immediately from this!
- The body metabolism trick you need to learn for baby that help baby sleep later and develop a routine that promotes more sleep for everyone.
- How to replace sleep props with sleep associations so baby doesn’t need you to get back to sleep every night.
Sign up for thefree series here!
Click here for the free printable!
I’ve created a free email series just for you! There are truly only a few reasons why babies and toddlers have struggles sleeping… really, I mean it. I am going to teach you the main 3 reasons and how to start making small changes to help your baby go from:
- fighting sleep to embracing it
- night wakings to sleeping through
- needing you to jump through hoops to going to sleep on their own
Click here to sign up for my free email series or simply click on the image below.
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