Sorry to piggyback onto your comment, and I know you can't give medical advice, but I wonder if you have any insight into a problem I have with sleep.
I'm early 40s now. One of my earliest memories, aged around 4, is not being able to fall asleep. I've tried EVERYTHING over the years. Sleeping pills are a guarantee if things are getting squirrelly, but give me severe rebound insomnia the next day. When I do fall asleep, it's like I can sleep for way longer than is normal (so either cause of sleep debt or poor sleep quality).
I've always joked that maybe I should be on a planet with a 28 hour day. But I also know that my lack of normal sleep is potentially storing up huge problems like increasing my risk of cancer, heart disease etc.
Melatonin kind of helps. But no matter what I do... My sleep pattern goes out of synch.
I've gone through school, 'normal' 9 to 5 jobs, relationships, all a big struggle as I have to perform at a normal level despite not having slept for 24+ hours fairly regularly.
I can do everything 'right' (no light in the evening, exercise, healthy diet, no excitement in the evening, no caffeine, mild sleep supplements) and still find myself unable to sleep. What the frick is wrong with me... Am I doomed to continue like this? I just want to sleep like a normal human being!