Need to break a habit

Open to any suggestions 😭

My baby just turned 8 months his schedule is 3/3/3.5-4. I know it’s my fault that his sleep is awful and he can’t fall asleep on his own because I’ve always fed him to sleep.. but I can’t do it anymore. He used to sleep fine in his crib with only one wake around 4am and then he’d sleep until 7am… now he wakes up every hour and the only thing that calms him is if I nurse him. We started cosleeping and that helped for a few nights but now we’re back to every 1-2 hours.

Bedtime is very consistent… but I know needs to change because it’s bath, lotion, bottle around 7-730 and he wakes up around 7 for the day.. which seems like a long time, but when he’s waking up every hour I’m not sure

I don’t really want him to CIO because he just works himself up so much he starts shaking…