Unfortunately that is how the human body works. Our sleep/wake cycle can only naturally drift by about an hour a day. It isn’t entirely dependent on how you feel.
It does get harder as you grow older. That’s why I try to avoid sleeping late now because no matter what I do, I still wake up at the same time every morning.
this happens to me all the time, I’ll fall asleep at like 2am, wake up at 6, unable to fall back asleep and then I accidentally sleep away the entire day from like noon to 7pm. I’ve tried everything even just staying up for days to reset the cycle and nothing works.
Very low dose to start ~5mg, you must have uninterrupted 8 hours to sleep and take at least 1hour before bed. If you have too high a dose or too little sleep you will feel exhausted all day.
Make a PLAN to sleep from noon to seven. Prepare something for a ready dinner, put on jammies, (pee first) get in bed, set the alarm. This is your gift to you. You won’t be disoriented because you planned it. Get up, have dinner, enjoy your evening and go back to bed at your usual time.