Advice for a four month old who will not sleep in the crib

[Lid98]

Hey guys

I have a 4mo who is my second baby so aware alot of this is just time but would love advice. He has never really slept in his next to me, sometimes he'd do about 2 hours but now has soon as I lay him down he will.wake up or 40 mins after. Co sleeping to survive which isn't my fave I like my space 🤣 how do we make it comfortable I wake up so stiff, with a dead arm etc from sleeping in same position all night.

Also from about 3 he's almost impossible to keep asleep which results in constant feeding, sometimes he won't lay down at all so I have to sit up and hold him. Currently cutting dairy on advice of a HV to see if this helps some of his symptoms. I play white noise v loudly which helps. Literally hate the stuff 🤣

He wakes every hour ATM then my 2.5 year old comes in at 6 and will touch my face loads to get himself back to sleep. My husband then takes baby cause eldest only wants.me. I'm very overstimulated before I even wake up 🤣

Any advice on how to get them in the crib or to.make cosleeping comfortable would be amazing.

By crib I mean next to me sorry. Literally no idea how we will move to be cot but that's a couple months away

We sleep trained at 5.5 months because of similar issues. I have hip and back issues since pregnancy and cosleeping was killing me. My son also understood cosleeping = boob time so he didn't just feed, from 2am onwards he expected my boob in his mouth 100% of the time. He also needed 1 hour of rocking every evening to go to sleep which was hurting our backs so much.

We used the Ferber method for bedtime and naps, to our surprise he cried for 10 minutes only the first night. And it instantly cut night wakes to 2 or 3 per night. It all went to pot when teething and ill so you have to keep repeating it and by 12 months it stopped working as I didn't have it in me to let him cry too much BUT for some reason breastfeeding to sleep started working well again. So I'm still breastfeeding him to sleep age 2 now 😂