Thanks very much for the replies.
We found a local professor for my son to interact with a few times a month. He is charging more than I would like but my son seems to really enjoy having someone extremely qualified to speak with about his ideas and what he is working on.
If we were to do it again we would have actively tried to slow down my sons progress but "we are where we are" and he now has no one to discuss math with. I want to keep his excitement and motivation so hopefully the current arrangement will work.
