Robert, my sister in law as a senior move manager and has written a couple of books (mostly aimed at kids planning for their parents), but she also worked with seniors in your situation. It might be worth seeing if there is one near you that you can work with. They might be able to get you past the tough parts
One option is to go to the physician’s office. Ask to speak to the office manager. Bring duplicate copies of the forms in case they claim that they cannot find your forms. Consider going in the mid afternoon when the office personnel tend to be less busy, have less phone calls.