Currently my son is drinking Enfamil Enspire formula. When we chose this formula it was because he was a breastfed baby but as my milk supply decreased I had to begin supplementing, we chose Enfamil Enspire because we were told it was the closest thing to Breastmilk. He is now exclusively formula fed. Anyways, we recently bought a container of Enfamil NeuroPro bc he's 6mo old and goes through an entire can & sometimes another half of a week at $40 a can. I checked reviews and it says that's NueroPro is easier to digest and good for the brain. But I'm not quite sure how to transition him from one to another. Do I make him a half current formula & half new formula bottle? I don't want it to be too harsh on his tummy? Any suggestions on how to make this change would be greatly appreciated! Thanks!