My daughter was just switched from enfamil to similac. She's only been on it for a day. With enfamil she was drinking close to 6 ounces since about two weeks every 2 to 3 hours. Which is insane I know. I started similac last night and she drinks about 3 to 4 ounces which is perfect and is knocked out. Anyone switched and noticed a much better response with similac? Her last bottle she didn't even spit up. Just went right to bed. I hope it continues like this. My question is has any one switched formulas and notice their child more satisfied? Or should I be worried she's not drinking as much