Not sure what’s going on with baby

Jennifer

So this week I started to the put my 3 months old on a schedule. And I also started to put him in his crib. He used to sleep with me or in his bassinet. It isn’t a strict schedule. I don’t feed him or he doesn’t nap at a certain time every time. Just kind of let him stay up from 1-2 hours and feed him as he wakes up and we play etc. He finishes his bottles (I pump full time no breastfeeding) but this week I noticed that as soon as I feed him he falls asleep. No matter what I do he won’t wake up. So he doesnt finish his bottle. Has anyone noticed this with their babies? Is my baby just too young for a schedule or could he not be sleeping well in his crib? Please help. It’s scary seeing him pass out immediately as I put the bottle in his mouth.