Spit up

has anyone had a happy spitter? our 7 week old spits up so much sometimes and then other times less. we’ve tried to figure out the pattern (different feeding positions, less milk at each feeding, more burping, sitting upright longer after the feed) and we have yet to succeed 🤣 my husband thinks it’s not normal but our pediatrician said as long as he is gaining weight and not in any pain, all is well. what are others experiences with newborns? when does it resolve usually?