Anti gas bottles

Katelyn

My LO is mostly nursing but I do bottle feed (breast milk) once or twice per day just so that dad can have some bonding time with feedings but I am looking for a bottle that will reduce her gas? Or some general tips for gassy babies. She is gassy even after nursing, and I have noticed certain bottles make it worse. We have tried Tommee tippe, dr brown and nuk bottles so far and I am really not happy with how any of them do on her tummy.