CC is not the only answer!! I would heartily recommend getting hold of a copy of the no cry sleep solution. There are loads of really good practical suggestions in there to help everyone, no matter what your method of feeding or sleeping arrangement. I have to say that after doing cc with my eldest 12 years ago I vowed never to do it to another baby, and I haven't. 7 months is very young, there are all sorts of sleep regressions he will be going through, and you've already said he has a tooth coming through.Although you hear people saying their lo sleeps through, actually at this age there are more babies with 'sleep problems' than not. Hang on in there and it will get better, and get that book.