Wake up really early. You'll be too tired to sleep late. On the days you're up until 5, stay up until night. It'll hurt a lot the first day you do it, but the

Wake up really early. You'll be too tired to sleep late. On the days you're up until 5, stay up until night. It'll hurt a lot the first day you do it, but the next day should be fine. Yes, that means waking early on a weekend and being a zombie for the whole day. I tried everything else as well for years, and it fixed my sleep problems in a day, every time.