I've tried lots of different things and the most effective has been forcing myself to get up early (~6am for me). It was really difficult when I first started, but then I got into a routine. It's the only thing that consistently causes me to be feel tired earlier at night and be able to fall asleep more easily. I also combine that with reading in bed (with a orange filtered light bulb) until I nod off (~20 minutes).

Sometimes getting up so early makes me tired during the day (I'm not a natural morning person) so I'll take micro naps to mitigate.

And getting an early start to my day is fantastic. I can run, read, meditate, etc before I start my work day.