H.H.
Get the nuby sippy cup. has a soft silicone top so it's closer to a bottle. Hide all the bottles so he doesn't see them and see if he will take the sippy cup after he realizes that's his only option. If he starts chewing the cup up after a while then try the hard plastic top cups and playtex are the best ones for not leaking in those. They do leak with soda or other acidic drinks but for milk, juice, and water they don't leak and you can buy replacement parts for them. Usually babies will get over the bottle if they don't see it again. Out of sight out of mind thing. It worked for me and they may have fussed a day or 2 (usually at bedtime) but after that they were completely off the bottle. The longer they have it the more attached they get and harder to get off of it.