Reset Sleep. People with your pattern benefit from 'training' of the internal clock. First step is to stay awake all day, no matter what. Go to bed at night, setting alarm for 8 hours. When it goes off, get up and stay up; repeat. No naps. Excercise only before noon. No caffeine after noon. Get a white noise generator. Sounds simple, but if you stick to it, you will retrain your internal clock.