He's 19 which slows him down quite a bit, and he's going to be 20 in a few weeks. You could try and train him 1v1 forwards to try and get his driving and handling up to try and get some secondaries and limit turnovers, then just cap him in his inside skills to make him a 1 dimension all inside player. Or don't even bother training the secondaries at all and just go inside D and shot blocking only make him a straight up stopper. You accomplish two things here, really test out the shotblocking so we don't have to do it and be if it works you have one of 2 good shotblockers on the TL right now. I'd say lost cause only depending on what you want from him.