Be careful of your own enthusiasm. His interest may wane and you may need to let go. Just keep that in mind before you make too many plans.
At Christmas, he got Mario Maker 2, and he's completely crazy over it.
I think it's something I can help him make progress and take his enthusiasm as a fuel for his knowledge. Maybe he'll stay on and learn a ton, or at least learn the basics, whatever he wants, I'll be fine with it :)