Every time he bites unlatch him and say no biting. Wait a minute before relatching. If you put him back on and he continues to do it stop the nursing session all together. Stay consistent. This way he will learn biting means no milk. If he is genuinely hungry then he will just eat. Breastfed babies tongues rest over their lower gums/teeth so he is moving his tongue to purposely bite you. He could be bored or just not as hungry. My girl used to clamp down with her gums and i did what ive just said to you and she no longer does it. I used to wait until she was just tbat bit hungrier so she would focus on feeding. Now if she wants to bite she will grab my finger and chew my finger. Sometimes she will nurse then bite my finger then go back onto my boob because she's learnt you can't bite mummy's boob but mummy's finger is okay. If he bites towards the end of the session then he's done. Hope it works for you!

When my oldest would bite me, I’d (gently not hard) flick her cheek and unlatch her then say no biting and offer boob again. Show em a mean face when you say no biting, baby will understand the facial expression more than the words.

Getting bit so much I’ve tried hnlatching but he’s so darn cute it’s hard to stay firm 😫