Nursing strike 15 weeks

BJ

Backstory my son has been in daycare a few weeks now. I use mam bottles and he was on the #1 nipple but it would take him over an hour to finish a bottle or he would get tired and not finish. I switched to mam #2 which says 2 months plus, but now he’s on a nursing strike. He screams if I try to breastfeed. He will take the breast for his overnight feeds but no other time really. It’s stressing me out ! I already pump 5x a day since I’m back at work. Any advice ??