Ay mama, yan ang challenging talaga! Usually makikita mo kung baby is uncomfortable after feeding, like excessive gas, bloating, or loose stools na parang watery, tapos the timing is right after milk. A few of us tried keeping a feeding diary para ma-track kung anong milk triggers the symptoms, kasi sometimes it takes 2-3 feedings pa para ma-observe ng malinaw. But honestly, best to chat with your pedia about this kasi they can do proper testing or may recommend formula na lactose-free para ma-rule out if yan talaga or something else ang issue. Hang in there, maraming options out there, you'll find what works for baby!