Fussy newborn

Leeah
I have a newborn who we were feeding breastmilk and formula but then my supply wasn't enough that I would have to pump 3 times to even get a bottles worth so we switched just to formula and were using enfamil newborn but he had bad gas and was spitting it up so the doctor had us switch to gentlease and he has worse gas now than before and last night was just crying for a few hours! Anyone have suggestions on what to do!