Mine started doing this- more baring her teeth while latched, rather than actively biting - but my goodness did it hurt; the pain made me feel sick! It happened a few times and every time I immediately unlatched her (pinky finger in the corner of her mouth) and firmly said no and then kept her off the boob for a minute.
I immediately unlatch and say ouch don't bite. He has done it three times in the first few days of teeth but not since x
I was told that when they bite to pull them in close so they unlatch and then roll them over to face the other direction until they understand its not a game and if they bite, the boob is removed.
Thanks everyone! I told him no very sternly last night and he responded with a big smile 😂 I’ll keep trying and make sure I keep him off the boob for a minute after