9 week old sleep

Hi!

My 9 week old still wakes every 2 hours at night for hungry baby formula! I've tried every thing to try get him to go a little longer (swaddling, co sleeping, letting him cry just a little ) he was born at 6 lb 4 and now weighs 16lbs.. I feel like his growth spurts do not stop and that's why he always needs food !

I have tried to feed him a little more but he will only ever eat 6 oz sometimes less

Can anyone suggest anything that might benefit the both of us?