I'm very similar to you. Left to my own schedule, I will go to bed around 2-3am and wake up about 10am. Unfortunately, I have to be out of bed around 6:30am for work, but no matter how hard I try or how tired I was during the day, when it's the evening my brain wakes up and I just cant get to sleep before 12-1am. The only thing that really helps is cannabis, but as I got older cannabis started giving me anxiety really bad.