Hi,
I am very sorry to hear about all your troubles. It sounds like you have gotton all the professional advice there is on this post concussion delemna. I am also a mother trying to problem solve for my son who is 16 and had a concussion from wrestling in mid February, he has been dizzy(primary complaint), light headaches that seem to be localized to where his injury was,has difficulty falling asleep. He is slowing regaining mental stamina and is able to do more and gets less symptomatic with light activity. We are being advised to listen to the symtoms and back off if they creep back. He is going to school but doing no homework, tests or exams. My gut feeling after reading, listening to others with the problem and tuning into the experts is that the prognosis is good and that the patient will get better but it is SO HARD TO BE PATIENT! You and your son have really had to wait a long time. I hope he will get better soon and please keep us posted on progress.