I am breaking down

Baby boy will be 3 weeks this Wednesday. Has had a hard time breastfeeding and was introduced to the bottle since birth. He will feed with a nipple shield but falls asleep a lot and still seems hungry after, so I supplement with a bottle. I try to pump right after feeding him but my supply seems to have gone down and I get about 2-3oz combined. Tonight I had my first break down. I’m down to one bottle of breast milk in the fridge. I just nursed him for almost an hour and is still hungry, I’m tired, and the thought of pumping makes me cringe cause my nipples hurt so bad. I’m also getting upset at the thought of having to use formula. This is so exhausting. I just needed to vent. I just want to go to bed and by the time I get to lay down I have to start this process all over. I’m sick of being tied to the pump and being stuck in this house. It’s so lonely.