That's a lot. So it's like using his own magic is a release valve for the obscurus parasite, but he can't reliably bring his wand to bear as a focus point to relieve the pressure. And you want to teach him to use the power without the wand as intermediary, so he can release pressure without worrying about the question of the wand. I'll need to think about that, and maybe have a look through a couple of things Uncle Luke wrote that seem like they might be relevant.