Prayers of course! It’s so hard to watch our loved ones become ill with this virus! Ask if they can infuse him with monoclonal antibodies/Regeneron. My doctor told me at my physical last week that it solves at least 70% of cases, and for us to call her immediately to get an appointment for an infusion if we (my family) got diagnosed with covid. That is a recommendation I put a lot of store by! Keep us posted, we will keep him covered in prayer.
21twelve, gas_dr here on FR strongly recommends getting the Regeneron monoclonal antibodies. He says that his patients have responded best to that. As VRWCer says, INSIST he get the Regeneron treatment ASAP.