He seems to feel good again today too. He woke up hungry, had a good breakfast, and has been propped up in bed playing Pokemon on his computer since. He has not mentioned his legs hurting. His feet and ankles are less puffy than they have been.
We haven't heard from MD Anderson, but his Mom is going to call and let them know that he seems to be feeling better. His thinking, speaking, and balance have all improved a lot from his low point, but are still very far below where he was a few weeks ago.