He is still very skeptical about being able to create new neural pathways by doing things that he doesn't want to do and I can't find any good articles on that. If you happen to see an article like that I would certainly love to see it.
Wouldn't this principle be the same as someone recovering from a brain injury or stroke? OT is used to build new neural pathways to recover what was lost due to the injury. Or even people who have had part of their brain removed due to cancer; the younger the patient, the more likely the child can relearn things lost from surgery.
Or what about learning in general? Each new thing learned builds a new neural pathway to store the memory, and how to get it back.