I am on cpap and oxygen when I sleep. But I need 9 to 10 hours of sleep. Less than that I go into hypomania.

In the early 80s w a diagnosis of major depression, a psychiatrist tried resetting my sleep cycle by staying awake for 2 days and then into a regular sleep pattern. I only made it through one night. By the morning I was beyond myself and absolutely had to go to sleep. So I did. Never tried that method of resetting my pattern again.

Now my diagnosis is bipolar 1 and my current psychiatrist said that is a bad method for resetting sleep for someone who is bipolar and my reaction was not a surprise. However back then I didn't have the bipolar diagnosis.