1) get up earlier
2) You can only shift your schedule about 1 hour per day. You can try shifting it more, but you're going to have sweater-head, nausea and hot flashes. If you go from getting up at 11 to getting up at 5, expect five days of feeling like crap.
3) The pineal gland is activated by light incident on the retina. So calculate when you need to go to sleep based on when you get up, and stop using the computer one hour prior. AND use Flux, or do something to turn down the absolute amount of light coming from your screen(s).
4) The sleep-wake cycle is naturally about 25 hours. It takes discipline to go to sleep at the same time every night. Or exhaustion.
5) Recent findings suggest that starvation can suspend the diurnal cycle 12 hours or more. So eat a good dinner.
6) Additionally, fats, proteins, warmth, and bulk activate the parasympathetic nervous system (rest and digest). Simple carbs offer none of these things. So fatty snacks are better. Unsalted nuts are a great snack (salt stimulated the cephalic phase of eating. So, sorry, but bacon is not a good snack).
7) Caffeine. Metabolized in the liver at a second-order decay rate by CYP1A2. Effective half-life is 3-7 hours.
Coffee: 30-170 mg/8oz Espresso: 30-50 mg/oz Tea: 10-50 mg/8oz (more with black teas) Soda: 30-60 mg/12oz Dark chocolate: 20mg/oz
Minimum effective concentration is around 0.05 mg/dL. Total body water is 40L for a 5'10" male (5'10" male has about a 70kg lean body mass regardless of total body weight and 40L of that is water. The 70kg and 40L vary linearly with height for adults). So those two cups of French pressed Sumatra you stopped drinking at 8:30 after a 7pm pasta dinner could easily keep you wired until 1 or 2 in the morning. Go on, have that chocolate ice cream, too.
8) Calculate when you want to get up (remember, you need to phase in the change, one hour a day). Establish a routine that starts at dinner. Eat. No more caffeine. Work. Have a small, fatty snack. Work until an hour before you need to go to sleep. Brush your teeth, change; lay down. Read something good. I recommend the classics. Doesn't really engage the problem-solving areas of your brain, but you've been meaning to start reading those things. Start with Plato. Very readable.
9) If you just absolutely have to go to sleep with noise, I recommend white noise. A beat, rhythm, or lyric will capture your conscious mind.
As for getting up, the only thing I've found that definitely will get me up without relying on sunrise is a social commitment. If surgery starts at 7 am and I need to round on patients before then, it's relatively easy to get up at 4:15. If I'm on a "research month", um, yeah.