4m old - refusing to sleep in crib after first feed

[Squareroundabout]

So I've got quite a specific issue but I'm hoping that someone else has been through it!

My 4m old has always been a terrible sleeper, lots of wakings, very difficult to settle early on, etc. Now we find that we put him down at about 8/8.30 (when he's naturally tired) and he goes until 11.30-1am ish, but after that he won't settle back down in his next to me crib.

We've been co-sleeping from this time onwards for the last few weeks, and barring a few exceptions my son sleeps okay when we co-sleep, albeit waking up for a feed every 2hrs or so. It's just me that doesn't sleep well, as I'm never fully asleep and always in an awkward position to keep him safe! My husband/I moves to the spare room and we move all the bedding away, and normally neither of us is touching him-like he would be in the crib. But if I attempt to put him in the next to me after a feed (he's EBF) he'll either straight off cry or he'll gradually wake himself up over 10-20 minutes and then goes into full pelt crying.

I'm glad he can sleep, but I worry we're making co-sleeping the norm which will affect how he then sleeps in his own room in a couple of months. It also makes holidays, staying with family, etc very difficult.

Has anyone had anything similar? Or any tips?? I would love to know how he somehow knows he's in the next to me when he's so asleep he's out for the count. Also, he's fast asleep when we put him down either in bed or in the crib (drowsy but awake doesn't work for him at night), so I don't think that's he's confused about where he is.

Thanks in advance!!

Not exactly the same issue as you, but when my ds was a baby, he would sleep in his Moses basket but not his cot. We ended up bringing the Moses basket up and putting him in it in his cot (we used to leave the stand downstairs). I suspect he probably found the cot too ‘open’, once he reached 6 months he was fine in his cot in his own room. We also found he preferred the sleeping bags rather than the cellular blankets.
Do you have somewhere baby sleeps well during the day and could you change what baby is sleeping in (bags/blankets). Might be worth a try.
Good luck OP, lack of sleep is no joke.

Sleeping bags are fab... snuggly and you can get very light ones for summer too.

Sorry OP can't help on the next to me as mine are way to old for those but I can sympathise on the 4 month sleep regression... its a nightmare!