Desperately Need Advice

My 18 monther still wakes up at night for a bottle of milk. I give her the bottle (not in her crib). She drinks it, goes back in her crib and goes right back to sleep. I give her milk before bedtime which is around 730. I started putting her to bed later thinking hey maybe if she goes to bed later..but didn’t change. Anyone else have this issue? Or have any advice on how I can get her to sleep thru the night?

I also have a 4 monther I am waking up for a couple times during the night, it’d be nice to not have to get up that one time.

Clarification..I’m not waking her up for feedings..she cries until I give her a bottle.