He is currently on Enfamil AR for reflux. I tried switching him to Similac Alimentrum last night, but he refused to take it. He would not swallow any of it. Very frustrating. I'm going to try and mix 1 oz Somilac with 5 oz Enfamil to see if he takes it and hopefully he will so I can up the Similac and slowly decrease the Enfamil to get him used to the taste.