Surely you have heard of "pre-hab" (the before surgery equivalent to rehabilitation after surgery). Your physical job right now is to rest and hydrate and get as much nutrition as your stomach will tolerate so that things will be optimal in the hospital. Your mental job is to get the paperwork done so that you won't fret about it while you're convalescing. You have a list of friends and lurkers who are happy to remind you that you should not be doing more right now. Vibes coming your way.