Help with 15 month old!

Morgan

He wakes up 3-4 times a night. He screams and screams until he gets a bottle of milk every single time.

Thus, during the day, he barley eats food food because he fills up all night on milk.

Also, he relies on the bottle of milk to fall asleep. So he also gets one for nap time once a day. We just put him in the bed with the bottle and he drinks it and falls asleep on his own.

What can I do ?? Advice is much needed!!