Baby Feeding

Wife is exclusively pumping. Our son (5 days old) latches but won’t work to get the milk out. Had to give bottles in hospital for low glucose levels. But was able to pump enough to feed. She produces more than enough to feed for the whole day. Even with this he still won’t breastfeed. He seems to only like the bottle and scarfs down an OZ in about 10 minutes, sometimes less. He will eat that and now 20-40 minutes later cry until he gets another feed. Should we just keep feeding him every time? We cut the oz to a half oz to try not to over feed. Curious what others have done in this situation