My son is nearly 9 with suspected mild ASD, but the diagnosis so far is Social Communication Difficulties with the intention to revisit in the spring. He also has SPD (proprioceptive) and is sensory seeking.
He's been having a hard time since this time last year, so we sought some help and received it. No statement, but school is supportive. The sensory stuff in particular seems to help, and we also now build in (what seem to me to be) phenomenal amounts of exercise into his schedule and this helps to keep his physical restlessness down. Academically he is fine, although his spelling is a bit surprising sometime (much worse than his younger sister's). 
HOWEVER. Today he told me, quite calmly, that everything is too much, he is having a hard time, he doesn't feel like doing anything, ever, school is too hard, and he doesn't look forward to anything, not even Christmas.

I haven't spoken to him about his condition as such. I have talked in general terms about what makes his brain happy - lots of heavy pressure and exercise makes his brain happy, but his sister doesn't need that because she is different. I said today that I think school probably is harder for him than some children, that he likes things to be really orderly and when they aren't that is difficult, maybe more difficult than for other children.
I don't know. Sometimes he is okay, quite cheerful, and happy and excitable as long as he is occupied, and then he will lapse back into this anxious, depressed sort of state when he lacks direction.
I've said we can talk to his teacher tomorrow, and maybe a doctor, and I already use lots of CBT-type techniques with him, but I'm not sure what else can be done, really.