Best formula for gas

Hi ladies. My little is almost 3 weeks old. I always intended to breastfeed and had not planned to use formula. Well my body disagrees and only lets me produce barely enough milk for a couple ounces a day. And that's only with pumping. I've accepted that. However, everytime we use formula my poor guy gets SO gassy. We have gripe water and gas drops but I hate using them multiple times a day.

I need to know what the best formula is that you guys use for gassy babies? We've tried Similac pro advance for gassy bellies and Similac for lactose sensitivity (just in case). Neither worked. But one day I had gathered enough breast milk to feed him all day and he was a different baby. Any help is appreciated!

Also I've contacted a lactation consultant to increase my production.