A.D.
Hi J.. I cut both mine off at 1 year. I think the difference may be that I started the sippy cup during snack times at 9 months. I always gave it to him weather or not he drank alot out of it. Then at 1 year (he turned a year 3 weeks ago)I just took away all bottles except the one before bedtime. Just a note....neither of my kids seemed to drink as much from the sippy cups...but that is ok. After a few days, I took away the bottle before bedtime. I didn't have any probs w/either of my kids. Just start giving the sippy more and more. But I have to say, I think I got really lucky w/my kids and my Dr. is fantastic. She was the one who told me when to start introducing the cup and she was adament about getting rid of bottles at one year. Good Luck!