Hello everyone) Mommies, my son is 4 months old and we're doing mixed …

Hello everyone) Mommies, my son is 4 months old and we're doing mixed feeding, it's hard for him to pass gas, he cries, he struggles, he walks long distances only once a day and that's with difficulty, sometimes he can walk freely for a long time and passes gas freely but rarely! What helps your little ones in such situations?