if she is drinking formula change it the gentle formula. it worked for my daughter.

They have drops my daughter was real bad with that and I always gave it to her before she drank her bottle seemed as if her bottle gave her gas or something she used to use a lot of those drops but they helped

I use to help my oldest pass his gas message his belly or grab his to legs toghter n press them down gently not to hard against his belly but folding his legs again n again until he farted

You can massage his tummy and work his legs. They have drops you can give but when I used them on my daughter it seemed like it made it worse and made her constipated.

I used to push my son's legs up while spreading his but cheeks to get him to fart. It worked every time.