i think you are lucky-my dd2 is 14 months and i have a hard time getting any milk down her atall now,i just ahve to make sure she has plenty of yoghurts and cheese.
my other 3 stopped having the night time bottles at around 18 months and just drank milk as a normal drink throughout the day.actually,ds1 may have been about 2.5 when he stopped having a night time bottle.
milk is very healthy and i dont think children can have too much.