I just delt with it a week ago, what I thought helped was sleeping thru the worst of it, if you feel bad, try to sleep (dayquil helped with some symptoms).

Help each other get food, drink plenty of water, hot teas.

If you're really concerned of the older folk in your home, you can try going to an urgent care to get those covid antivirals, if taken early enough can help with the recovery.

Best of luck friend, covids no fun