we have similar here with DS who was 6 weeks early. I cut out most dairy and soy and I have to really watch the veggies I eat. Ill try new stuff every so often to see if it has an effect on him. Cucumbers, peppers, edemame, chocolate, and leafy greens are some that ive found that really effect him. It does get better the older they get though...ive noticed that when he does have gas hes gotten better at passing it now that hes 12 weeks (6 adjusted). It still stinks though bc I would kill to eat a big fresh salad but right now I just cant. I have a problem with over supply that has also gotten a little better but I found that even when I would let some out of my breast DS would still gulp a lot just bc my flow seems to be fairly fast and this caused a lot of tummy issues for him. I try and be very mindful of how I hold him if I know that my flow is really fast (its about 50/50 that its fast or normal). Once we got the gulping figured it it seemed to really help with the gas.