E.A.
Im in the same situation. My daughter is 2 1/2 and she will ONLY drink milk out of a bottle. I talked to her doctor about it and they told me not to worry about it because children do that when you introduce another child into the family. My daughter sees her little brother (7 months) drinking his bottle so she wants one too. Im still concerned about it but the doctor says its no big deal she will stop drinking out of the bottle and wanting milk in a sippy at her own time and not to force it on her. I hope this helps, if not at least you know you are not alone on this subject. Good luck