You know that rule “shut down all screens” 1 hour before sleep, but there’s always something to watch/to program etc. Have you found the discipline to do it regularly?
How do you deal with the going-out in the evening, if you strive to wake up at that time?
Do you have some interesting/intense routine like running, which was quite common in american movies?
Go to bed at 9 pm. Get used to going to bed at that time. Your body will adjust.
I do this same thing every night. No problems waking up at 5-6. It didn’t take long to adjust to it.