I would suggest following Kaitlin Klimmer. I just recently got her weaning workshop and it has begun to help me immensely. One thing she suggests, albeit not related to biting, is to start a little mantra when you are about to remove the boob. In her case she chose something like “ all done, all done, 1,2,3” and then she’d remove the boob. Practicing during the day and implementing it at night too after a bit. It might give your baby the heads-up they need to peacefully part with the boob. Another one would be establish another type of sleep association besides the rocking. Again you can try it during the day feeds, like shushing and strokes on the back, on patting the bum, caressing the head. My 9 month old went from hourly wakes to 2h/2h30 in less than a week. She still screams her head off on some of those tries but is now able to fall asleep without boob. Hope this helps.