Help!!! Gas issues! !!

Rosaina
My jax is 6 weeks today. He has horrible gas pain. He's formula fed only. Tried gas drops,gripe water, sensitive tummy formula , Tommy tippie, Avent &platex bottle. I heard dr.brown good & bad. Not sure if I should try. Any other ideas? I feel horrible seeing him in pain grunting all the time. P.s. I need some sleep too.