S.G.
i'm sort of a cold turkey girl. we stopped all bottles at 1. sippys only. personally, i would just start putting milk in the sippy cups and cut down on the water and juice, so he's thirsty for the milk. if you don't want to be that drastic, maybe just start putting less and less milk in the bottles. i would still cut down or out the water and juice for a few days to make sure he's thirsty. at that age, he won't dehydrate. when he gets thirsty enough, he will drink.