Breastfeeding help...

Monica • One happy mamma! 😍 💙👶🏼
Ok so Iv had scabbed bleeding nipples when I'm the hospital with my son. He is now 21 days old and my nipples haven't fully healed. They are super sore, hurts when I feed, drying off in shower and my shirt rubbing, after feeding him they hurt when I put him on my chest. I put the nipple cream and rub breast milk on them. So when he was a week old I started feeding him formula and breast milk to let my nipples heal a little. I don't want to give up giving him the breast milk so can I only pump? How can I up my breast supply? Or any help would be awesome