@laser@feddit.org said this:

Some tips that might or night not help:

• don’t watch screens about an hour or so before going to bed. ~~What gets me really tired is reading books ~~
• drink caffeine not later than 6 hours before going to bed
• no alcohol
• good room temperature and ventilation
• keep activities in bed to not sleep-related ones
• someone’s when I wake up at night and can’t get back to sleep, switching from bed to the couch helps for whatever reason