Gassy baby

Any tummy tips for this new mama? My baby is 3 weeks old. I switched him from similac pro advance to enfamil gentlease. At first seemed like he was doing fine on it. He’s been on it for over a week and a half now and the past couple of days his gas has seemed worse. Gas drops and gripe water haven’t been doing much. The bicycle kicks and tummy massages haven’t helped. The only thing I’ve found that helps some is his swing. Is there anything else I can try and has anyone else had this experience with enfamil gentlease? He poops good and only spits up a few times a day.