Constant Blowouts

Hello. My little man is almost 15 weeks old and has a lot of blowouts. He’s always seemed pretty gassy in general. He gets probiotics every day and tummy drops before each feeding. He is exclusively BF. We always burp him a lot during and after feedings but as he as gotten older, he doesn’t seem to burp after feedings as much.

We moved up a size in diapers and he is changed every 2-3 hours and less if needed. It seems like he has a lot of pressure with his toots and poops. At daycare he has a blowout almost every day. It’s been that way since he started almost a month ago. Any ideas? I don’t know what else to do.