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AIBU?

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4 month sleep regression pls help

8 replies

teamaven · 24/02/2026 00:06

My 4 month old has slept 12-13 hours uninterrupted every night since 2 months old.

The past 3 nights have been hell (probably not to some people, but compared to what we had before! 🤣)

This is what I imagine is the regression. She is waking up between sleep cycles so every 45mins ish and not wanting to go back to sleep (especially on her own!). We never needed to sleep train before she would just go in her cot and go to sleep 🤷🏼‍♀️

When she is waking up each sleep cycle there are a couple of occasions I can tell she is trying to go back to sleep herself (she sucks her thumb and covers her eyes with her other hand which is what she has always done) but can’t and whinges and whinges (I’ve tried leaving her for a few mins to give her the chance to fall back to sleep - I’m always next to her)

What do I do and not do??

OP posts:
teamaven · 24/02/2026 00:06

Sorry I didn’t mean to post in AIBU! 🤦‍♀️

OP posts:
Bearbookagainandagain · 24/02/2026 02:43

She is too young to sleep train IMO. For me sleep training or any methods to encourage them to sleep on their own comes later when they stop needed milk at night and move to their room.

I'd co-sleep if that helps and you're ok with it. Keep putting her into her cot at bedtime and whenever you can do she still gets used to sleep on her own, then take her with you when she starts waking up (I'm guessing 2-3 am?).

SunshineMel678 · 24/02/2026 02:51

You don't sleep train, 4 months is tiny.

You have to ride it out. Bounce, rock, feed, co-sleep. DH needs to help too.

They do sleep eventually.

Idontspeakgermansorry · 24/02/2026 05:20

Nothing you can do, but wait and ride it out. 4 months is too young for sleep-training.

It does get better! In the meantime, lots of coffee and napping whenever you can.

teamaven · 24/02/2026 09:36

I wouldn’t sleep train now, what I meant is that I’m not used to having to help her fall asleep (as she always just went down and went straight to sleep - very lucky!) so I don’t know if I should with the regression start rocking her back to sleep etc between sleep cycles or if I should let her try to fall back asleep by herself? There is lots of conflicting info :(

OP posts:
teamaven · 24/02/2026 09:38

Bearbookagainandagain · 24/02/2026 02:43

She is too young to sleep train IMO. For me sleep training or any methods to encourage them to sleep on their own comes later when they stop needed milk at night and move to their room.

I'd co-sleep if that helps and you're ok with it. Keep putting her into her cot at bedtime and whenever you can do she still gets used to sleep on her own, then take her with you when she starts waking up (I'm guessing 2-3 am?).

She was in our bed last night but it didn’t make a difference. It does make me nervous though so would only use as a very last resort.

She slept from about 7:30pm - 9:30pm and then up every 45 mins until 1am then would drift off for 5/10 mins then up again for the rest of the night 🥲

Here’s to hoping it doesn’t last too long!

OP posts:
Geranium1984 · 24/02/2026 10:08

Obviously too young to sleep train but if you can maintain what you were doing before, or mininal intervention (without lots of crying) ie. Stroking her in the cot, shushing and patting in the cot, hopefully she will maintain a bit of that independance then you'll never have to sleep train!
Id also give it a couple of mins of grumbling before attending to her as sometines they are still half asleep and will go back off.
Hopefully this is just a phase!!

FryingPam · 24/02/2026 10:14

I think these phases come and go…mine suddenly started the 45-minutes cycles at 11 months. He’s now almost 18 months and it’s up and down, he has some good nights where I get 6-7 hours uninterrupted sleep, but there are also weeks where he does the ‘let’s wake every hour’ thing.

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