Hi
We are currently going through the process of getting a diagnosis for my DS who we are sure is on the autistic spectrum.
He has never slept a full night in his life. He has no trouble falling asleep and will sleep for about 4 hours solid but then wakes on avergae 5-6 times a night. He comes through to us and we lead him back to his room with no talking, pop him in bed and go back to bed. Then an hour or two later we go through the whole thing again.
When he was younger he would tantrum and have night terrors as well as day terrors - so this is an improvement. He once woke 16 times in a night.
When we ask him why he is waking he says he is bored. He also says he is dreaming about Great Grandma (who he rarely sees) - he has a thing about her wrinkly skin which he asks about when we do see her 
Is this common in children with ASD? I am worried that the diagnosing process will take a long time (even though we are getting a psycholigist to do observations etc privately)that we might crack up before we are able to access any support.