10 day old ate himself too full, help!

My 10 day old son just ate himself beyond full :( he kept drinking the bottle even after he was full i guess, and is now gagging while trying to sleep! I have him propped up in his lounger, where he normally lays until i switch him to his bassinet. Is there anything i can do to ease his upset tummy? He’s grunting and now super gassy :(