My DS was exactly like this at this age, also teething. It was the only thing that eased his discomfort. It really was awful It went on like this from 8 to 11 months, when his 6th tooth burst through and suddenly he went back to only 1 or 2 feeds per night.
Have you tried pain relief? Nurofen is generally more effeciv ethan pandol. Or what about an amber teething necklace? That seemed to help for us (didn't discover them till DS was older unfortunately.)

I would think with all those feeds, especially overnight, that you'd have an enormous supply