Mine hasn’t done this (yet) but I was told to keep your reaction calm and firmly tell them No, while removing the nipple (like another mom suggested). Yelping/shouting even though it’s hard not to do it, comes across as a game and funny. But at this age they can understand firm tones for their meaning.

My son does that when he isn't interested. Id say put her down and say no. She will get it after a few times.

Mine did this when he was around 4 months for a while. I would just pinch his cheek (not really pinch, but put my thumb near the corner of his mouth and pointer finger towards his ear and just pull a little) to break the latch. I know some people say to put your finger in their mouth to break the latch, but unless I had just washed my hands, I never did that. He stopped the biting after maybe a week and I kept breaking the latch every time he did it. I think he finally understood that he can’t keep eating if he does that, so he stopped. He also smiled at me every time he did it, so it was hard to be mad at him!

Same thing is happening here! I tell her “ouch, that hurts Mommy” and usually put my nipple away. She prolly doesn’t fully understand, but hopefully it will work. She doesn’t seem to do it when she’s really hungry, it’s more of a game to her.

Unfortunately I dont have a solution but I can relate. When my now 18 month old son was trying to nurse he would get a good latch and then try and turn his head away from me to see around the room, it was so horribly painful...hang in there momma. I never made it as long as you have with nursing with any of my 4 sons. The longest I could do nursing or pumping was 3-4 months. So I hope you are able to find a solution.