There is an app called barcode alarm where you have to scan the barcode to turn it off. I used to put my barcode in the bathroom cabinet, so I’d have to get to the bathroom to turn it off, and then I’m in the shower, and then I’m awake.
After you’ve done that for about 10 days you’ll probably find you’ll be going to bed earlier, but yeah, little read instead of telly before bed, no screens, no caffeine after dunno 13.00? Stuff like that