T.K.
I have an 18 month old baby girl and I just did it.The night time bottle is the hardest. I watered down the milk in the bottle first (1/2 water 1/2 milk). After about a week of that I gave her a warmed up sippy cup with all milk in it plus I kept her up a little later so she was really tired. She usually drank all the milk before I got her upstairs to her room, then I started a new routine with books and songs. She did not mind not having the bottle. She did ask for it the next night but I stayed strong and gave her the warm milk in a sippy. After 3 days I was confident enough to throw out all those bottles! Try it!
Mother of 4 and still learning.