I had the same problem with my son - 4 mo. old now. I cut dairy completely out of my diet and it helped, but he was still fussy and had a hard time sleeping partially because of gas. I use gas drops with him any time I think it's gas. I have been told by many health professionals that these are safe (I use little tummies) because they don't absorb into the body. I had suspicions that he was sensitive to other things in my diet (maybe eggs, caffiene, nuts, other things) so I decided to make the switch to formula at 3 months. He started on Nutramigen (expensive) so we tried Gentlease ( he reacted to the milk with a rash and gas) and now have settled on Prosobee soy formula. He now has almost no gas discomfort and I haven't used gas drops more than a couple of times in the last couple of weeks. this may also be due to digestive maturity, though. Hope this helps.