My dad has been dealing with covid and it's been about 6 days now. He's running a fever, peaking at 100F every 24 hours, and his oxygen levels are fluctuating between 93 and 97. He's had a cough even before this, but it seems to have gotten a bit worse since the covid diagnosis. While he's quarantined at home and mostly okay, he does mention feeling short of breath at times. What should we be doing to make sure he's on the right track health-wise?