Trying to get off the bottle

So my son is 1 yr and 1 month. Amd im trying to get him off the bottle, He still wakes up at least 3x at night.. and ive tried to put water in sippy cups as well milk and he wont take it. He only wants his milk in his bottle.

He will drink during the day from any cup or sippy cup, it can be molk or water or whaterver with no issues. But when it come to nap or bedtime he wants the bottle.

HELP ANYONE?? Any ideas??

How did you get your child off the bottle