Hi, I seem to have had good success in improving my sleep quality while using natural, alternative remedies. I tried using acupuncture a few years ago to get a good sleep and I would highly recommend it. I read that studies find these techniques do have a benefit but who knows. It said Acupuncture improves blood flow and circulation through your body.
I found a very interesting article take a look here:
https://www.ginsen-london.com/blog/waking-up-at-the-same-time-every-night/
I hope it will help and you will get the exact reason for your sleeping troubles.