Hi, My son is 2.8 years old. He is not drinking milk without bottle and his top front 3 teeth are already effected. He is drinking water with glass but not milk. Can someone suggest me how to get rid of bottle. I have tried many times to use glass but he is not at all allowing. I know I have to use glass but I want to bring change gradually. Can I use some bottle with spout,will it effect the teeth or any other that doesn't effect teeth.Can Someone please suggest.