The most important thing to remember & keep in forefront of your mind is that Baby can not feed and bite at the same time. Watch and pay attention (especially at the end of a feed) when Baby stops actively sucking, as they can take a little "nip" at you then
The best thing I used to do was *smoosh* Baby right into my breast if they did clamp down and bite....they have to open their mouth and come off the breast for breath. It's best not to give a massive reaction (yelping, ouch, etc) as it can frighten some babies or encourage others to think its a game
I used to also close my nursing bra & say "no biting. Mammy doesn't like that" and then resume the feed maybe half a minute later.
FWIW, I fed my first boy to 6 mths (&4 teeth) and my second boy to just over 14months (& 8 teeth & 4 molars all breaking thru).
HTH