Have you tried exercising (>2h before you go to bed, IME), staying away from screens 4h before bed, and dimming the lights 1h before bed?
That was a life-changer for me.
That was a life-changer for me.
Needless to say I went from awful sleep to going to bed as the sun went down (in summer), and not waking up until sunrise, all in the matter of days.
Thinking back on it, I really should get back into that.