I really need advice. Breastfeeding and teeth. Warning picture of boob

Since my baby has got his bottom teeth he as been grazing my nipples, he feeds normally but his teeth grate against my nipple making them so sore and he won't feed from my left side as that has a scab with new skin growing. I don't want this to be the end of our journey. Is there anything I can do to heal my boobs properly and fast and get him to not grate his teeth on me when feeding?