Ay mama, Similac Gain Two is mas matamis talaga compared sa Enfamil, kaya maraming babies ang mas gusto nito, pero it's also possible na hindi lang yun ang issue if your LO is having tummy trouble with formula changes. A few of us tried switching from Enfamil to Similac at ang babies namin ay mas okay sa sweetness, pero one of my mum friends' baby still had digestive issues kaya kinailangan nila mag-try ng hypoallergenic formula instead; baka worth asking your pedia if it's the taste or maybe the ingredients na hindi agree sa LO? The transition itself takes time din usually, so maybe gradual mixing ng old and new formula over a week or two can help rather than full switch agad.