Melatonin might help

If I take melatonin when I’m not on my meds, I fall asleep fast enough but don’t sleep very well and have odd dreams.

If I take my meds but not melatonin, I tend to stay awake a long time.

If I take melatonin while my meds are in my system, I sleep for almost exactly 7.5hrs and wake up automatically, well rested.

No idea why that is. Anyone else relate?