K.A.
When switching him from a bottle to a cup with cow's milk try to make it different. Try using Nestle's Quik (chocolate or strawberry). It has less sugar then the generics and it has added vitamins. It's a little over $6 for a huge container of each flavor at Wal-Mart. That's what I had to do for my daughter and it worked when I found out what her favorite flavor was. Now she downs the milk out of a cup.