How much fm to feed newborn

Hi mummies, I just gave birth a few days ago. Bb is 5 days old and drinking FM as my supply have not kicked in. He is 3.4kg at birth. Day 1 - hospital gave 30ml/ feed Day 2 - hospital gave 35ml/ feed Day 3 - hospital gave 40ml/ feed upon discharge Day 4 - CN gave 50ml/ feed Day 5 - CN gave 55-60ml/ feed He doesn’t vomit out milk, and sometimes start crying/ fussing for an hour or continue with suckle effect even after fed. Are we over feeding? #advicepls #pleasehelp #firstbaby