Miller said they did not find a “smoking gun” physically. No carpal tunnel or other physical problem. The only specifics he shared was a vitamin deficiency and a medication adjustment. He did not provide further details and we did not ask. At this point, he is very optimistic that he is ready.
Thanks to all for the feedback. Happy to share and answer questions. I am obviously paraphrasing comments and am trying to double-check my shorthand for clarity.