A friend has a HG+ kid who was a terrible sleeper until he was accelerated from preschool right into first grade. Grade school hasn't been a bed of roses for them by any means, but the kid started falling and staying asleep properly the very FIRST day of school. She says it was a miracle that told that them whatever was going to happen, they must have done something right.
magnesium had also helped somewhat already but nothing worked as well as finally getting the kind of structure and intellectual stimulation into his schoolday that entering 1st shortly after turning five provided.
With ours, things clicked somewhere between five and six as well iirc, I can't point to a specific life change. However, I think being able to read fluently and silently to himself (mine was a "late" reader according to the standards on this forum), ie being able to find intellectual stimulation quietly and on his own, without intense social interaction involved, helped.
So, there's hope ahead!

Last edited by Tigerle; 01/20/16 12:32 AM.