Gassy 5 month old

Ines

Is anyone still dealing with a gassy baby? My son had TERRIBLE gas for about 2.5 months. He was really good for about a month and lately he has been ridiculously gassy and uncomfortable again. He is formula feed, and we burp him or he burps on his own after feedings. We have been introducing pureed foods like sweet potato mixtures. Maybe that's the cause?