Quoting Jamie's Momma :" 8 months EBF DS still prefers boob over EVERYTHING. He will not take a bottle, will not take a sippy, ... [snip!] ... him quit. My nipples aren't sore after thank goodness. Any suggestions to get him to take food or a sippy? And to stop biting?"
Fortunately food isn't a big deal until after he's turned 1. Right now it's all about discovering different textures and tastes. Just keep offering and eventually he'll get the hang of it. As for the sippy, have you tried a soft spout or a straw spout? My DD has been using a soft spout sippy from day one. However, she still doesn't drink it half the time. She'll suck it out and let it dribble down her shirt. I'm guessing eventually she'll start to drink more of the water
And as for biting. If he's not actively nursing, watch him and make sure he doesn't clamp down. If he does, put the boob away. You kinda have to do it a few times before the get the picture..biting=no boob.