D.N.
Gas could definitely be the problem. My son was also gassy and he kept waking him up also. Is he on breastmilk or formula? If it's breastmilk then perhaps you need to make changes to your diet, figure out what it is you're eating that's giving him gas. I couldn't eat broccoli or onions. If it's formula, consider trying a different brand of formula. Or maybe like my son, your son could be a little lactose intolerant so try soy formula instead of regular. I also use to give my son some gas relief drops before bed - just in case and he usually did sleep longer then.