F.J.
Whenever YOU and the baby are ready!! My girl is 18 months and still gets a bottle with water at bedtime and during the night. Now you can get her off of it but be prepared for the screams... Personally I like the peace!! My daughter wont do a sippy cup and only drinks from straw cups... that may help with the mess if you get those toddler straw cups... My boys were both over 2 before we stopped tbe bottle at bedtime. You can always give it a try and see how it will be. Good Luck