L.W.
You've already gotten some good advice. Just substitute breastfeeding with something else more frequently. He may prefer chocolate milk or juice. I know some people would be appalled at the idea of chocolate milk, but my pediatrician said that if they are at a healthy weight it's okay. It's better that then no milk and you can always offer plain milk first. My rule is that if they have already had junk food or are eating something that is already sweet, they have to have plain milk. They can have chocolate milk otherwise. And there may be sugar free chocolate mix. I agree with what someone else said, if he's biting you, you need to tell him no and put him down. One of my sons bit me, but after a few times of that, he simply weaned himself.