M.D.
Hello J.,
Funny thing about kids, they read adults well. With my son I gradually introduced the sippy cup. He was about 16 months old when I explained to him about a bottle. I got a bag out and he helped put all of the bottles into it and he then graduated to a cup. At night he still wanted a drink of milk but it was in a sippy cup. I then rubbed his belly and he went back to sleep throughout the night. I don't think it is necessarily the milk in the bottle but what the bottle represented. He now drinks from a cup without a lid. I offer camomile tea to him that warms up his belly at night. It is a passing phase. Best of everything to you.