We are headed to the doctor

So… We have literally tried everything- from hippy/holistic remedies to towing the line to what the doctor has said in past appointments and everything in between. I am serious- by trying I mean 2-3 weeks of disciplined efforts, with absolutely no progress. Cameron has no issues falling asleep. We've pin pointed the trouble to staying asleep. He wakes up almost every hour, almost every night. A good night is 3 wakings or less. I have been exercising to lose weight and with the lack of sleep, my progress is slow.
He doesn't eat, and only sometimes drinks a little milk in the night. He is old enough and weighs enough that he should stay asleep.
There are only 2 things we haven't tried- co-sleeping in our bed, and the old old trick- whiskey. I don't think either will make a difference since falling asleep isn't this issue at hand.
Dan and I are starting to wonder if poor Cam has a sleeping disorder. We are both actually starting to worry that he may have sleep apnea. We have a doctor appointment with his doc in 1 week. In the meantime, I camp out in his room while he puts himself to sleep.