Depends on if he is physically ready. Very few kids excel by going early unless they are top of class types of players. Your son is a guard if I remember your videos, very few small in stature players will excel reclassifying.
He can outwork everyone without giving up his childhood. Teach him work ethic for sure, but if he’s already missed a year of action, he’s probably behind and not ahead.
Be his dad and let him live his dreams, and experiencing growing up. Make sure it’s not gory dream you are trying to live through him. Very few play D1 and even less go pro, but life lessons are forever.