Studies have shown that blue light effects you body twice as much than any other light
Changes in sleep patterns can change your body’s natural clock. Know as circadian rhythm, which is he body clock. If you went to bed at 9:00 and woke up at 6:00 your body sets a natural timer, If the next night you go to bed at 11:00 and got up at 5:00 this can cause your body clock out of wack which takes 6 weeks to reset
You could read before you go to bed, you can buy blue light blocking glasses finaly you can set a timer to turn off your devices an hour to 30 min before you go to bed