He's never going to grow if he doesn't fail. You can teach him not to get into that situation, and that makes for a good ball player. But he's already a good ball player. The only way he's going to be great is if he knows how to get un-stuck when he ends up there.
If Burks could only teach him how to drive into a quadruple team and still make some circus shot that would really improve his game, but he has time.
I do agree with time he will tighten things up and make better decisions. I think he's going to be fine.