TentacleEthics
I think it's going well so there is no need for time frames or at least don't directly jump too many years like 7 to 10 have him do at least something in this age like put a dozen chapters and then when he gets to 14 he starts writing day after day. since he is still small he should go to a magic school at the same age that mum went so here we have a volume that he is in school