Had initial feeding problems due to tongue tie. That's left me with an insufficient supply, and baby needing top-ups. Supply has gradually increased since the tongue tie was cut 5 days ago - I now get more if I pump (just under 60ml total if double pump where I used to get 30ml total), but have to leave it 4 hours or so between feeds/pumps or there's just hardly anything there. I know that because pump gets about 10ml out, and if baby feeds that often he doesn't feed for long before giving up, and doesn't swallow much. So we've been on ff then bf then ff etc. Recently he's started drinking the formula too fast, and then throwing up. This is better if I bf first as he's less hungry, even if there's not much in the boobs.
Obviously I'd like to up the supply as much as poss. Baby is 3 weeks old. Am I better bf at each feed and topping up after, or sticking with ff then bf then ff etc and perhaps trying to reduce the gaps between until I'm bf every 3 hours or so? Baby can't feed on demand as he doesn't 'demand' enough so I have to offer something every 2 hours at least so he doesn't drop weight. He is gaining well on the current regime and is now finally heavier than his birth weight.