Well .. the main indicator is your health after a certain period of adherence to such a regime. Do you feel that mood lability is gradually increasing, your appetite changes, it becomes more difficult to fall asleep / wake up, more often you "disconnect" from the outside world for a couple of minutes, your ability to concentrate worsens? No - and ok; yes - try to set up a routine, get up / go to bed at approximately the same time. To speed up this "settling down" take a course of L-tryptophanic acid, check the level of Vit.D, there is a deficiency - add it too.
Because I was asked to answer this question ... I am not a doctor and I cannot say about the benefits or harms. But as a person who actually works on freelance, I can say that the sleep schedule is somewhat different))) in an emergency, you work until you fall asleep and wake up as early as possible by an alarm clock to finish the unfinished. Where did you get "sleep enough" riddle in the question)))
Not only the actual duration of sleep is important, but also the constancy of the regime and, ideally, sufficient insolation.
Thus, the regime in which you sleep at about the same time in a sufficient amount of dark room, then it is quite useful for health, it remains to remember about the need for sunlight (or a moderate tanning bed) for the production of vitamin D.
From personal experience - only health benefits, chronic diseases recede, and in general life is beautiful.
But social connections from this lifestyle suffer, alas.