I'd really welcome any suggestions for how to gently encourage my 4.5 month old to sleep. He wasn't too bad until 12 weeks - would feed to sleep around 2200 after much cluster feeding, wake after 4-5 hrs, then again after 2-3 hrs. Since then, we've hit the so-called 4 month sleep regression hard and everything has gone to pot.
Our main issue is his frequent night waking. Sometimes the issue is getting to sleep, other times staying asleep. A good night at the moment means he wakes after 3 hours, then again 2 hourly. A bad night means it can take 3 hours to get him down in his crib for more than 20 minutes, and results in hourly wake-ups. Unfortunately, his preferred way to get to sleep at home is to breastfeed to sleep and he gets very upset when I try to resettle him through any other means. 9 times out of 10, he goes ballistic when DP tries and I can't take the screaming (it's not low-level grumbling, but full on choking-on-own-saliva...).
Positives: he does know the difference between night and day, and sleeps around 11 hours overnight and usually around 3-3.5 hours in the day, broken into 3 naps (shorter morning and late afternoon/early evening naps, a longer early afternoon nap most days). He usually starts the night in his co-sleeper crib but ends up co-sleeping with me. He has a bedtime routine, and we follow the same steps for daytime naps minus the bath and massage. He's very flexible about where he sleeps (pushchair, car seat, sling, our bed, etc, all acceptable, stealth transfer to crib sometimes works).
I think the very frequent wake-ups/problems settling in the first place are related to wind/tummy trouble, but if he won't burp, he won't burp. Then he wakes crying, I lift him out, he burps, and then wails at any attempt to settle him other than feeding, which ultimately makes it worse. It's maddening.
So:
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Should I be trying to break the feeding-to-sleep association at this age and, if so, how? It's currently the only way to get him to nap at home.
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How often should he go between feeds at night? He goes 2-3 hours in the daytime. I'd like us to get to the point where he goes 3-4 hours at night.
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Is there anything I can do about the wind? Gripe water makes little difference. Infacol makes no difference. He isn't allergic to dairy (he has been mix fed previously).
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Is he too old to swaddle? He sometimes wakes himself thrashing around but am not sure if swaddling at this age for the first time is wise.
We're riding through this stage by breastfeeding on demand, co-sleeping and DP banishing himself to the sofa bed, but I'm a bit concerned we might be creating bad habits....
If you read through all that, thank you! All suggestions welcome!