Hi My Son Is 5weeks Old, I Stopped Breast Feeding

hi my son is 5weeks old, i stopped breast feeding at 2weeks as he wasnt staying attached properly so he was getting bad wind pains and i was having to feed him every hour so i put him on s26gold comfort formula hoping that would help with the wind but i was still having to feed him every hour/hour and a half so i added karicare thickner to his bottles and that moved his feeds to 3hours apart, but the formula its self wasnt comforting him so i changed him to s26gold AR and that seemed to make him abit better but not much. so i was just after some suggestions and to what other formula might be good to try for him?