Combo feeding

Nastea

Hi ladies, my 7 weeks old baby suddenly started eating less formula after I started breastfeeding him more. Or so I think, is it possible for him to refuse the bottle now that he gets the real thing?? He will only take and drink 120mil (4oz) only if he is extra hungry and only if my husband is feeding him.

But my concern is that we only recently started to breastfeed more, and I don't think there's enough milk for him. He eats for 10/15 min and goes to sleep. He's not fussy, doesn't cry, seems happy. But he never cried before and I don't know what to think.

So is it possible for him to reject the bottle now? And how do I know he gets enough milk?