8 month old waking up for bottle multiple times a night

So my son will be 8 months old on the 29th. He’s been waking up every single night 3+ times wanting a bottle. It’s like his milk is his comfort because I’ve tried giving water instead of milk when he wakes up crying and it just pisses him off more. I’ve tried a paci. He refuses it at all times. The only way to get him back to sleep is 4oz of milk. Any tips on how I can get him to sleep through the night? He sleeps in his own bed in my room. I’ve tried music and no music. I’ve tried white noise. We’re on a strict routine due to daycare. When he comes home it’s eat baby food/table food, bath, playtime, bottle, bed. He’s usually in bed by 8–8:30 latest. I’ve tried getting him to bed at a later time. It makes it worse. We live 40 mins from daycare so he naps on the way home (around 5:30). & that’s his last nap before bedtime. He’s also getting in a habit of waking up anywhere from 2am-5am & playing for about an hour before he finally crashes again (after a bottle). Help!