L_w, since you wrote that about the note from your doctor, it has given me an idea.
My husband has chronic microcytic anemia. Basically his body does not store iron, so it does not make blood cells properly. He is receiving iron infusions and blood transfusions every 3 months or so, lately it has been down to every 6 weeks. We discussed it last night, and decided to ask his family doctor to give us a letter for our application (we are still gathering all the paperwork, scheduled submission is by mid-late January) stating how his illness and treatment affects his daily life. Considering that his father passed away last week and he is now living on his own, we are hoping this gets us at least some kind of urgency when our application is filed with KG.
So, I say all of this to say, thanks for mentioning that, it was not something we had considered doing before.