Retrain body to be happy with less sleep?

Train more = sleep more. 

How about getting to bed earlier?

Go to bed earlier.  I love that!

To get 8 hrs, I would have to go to bed at 9:15. 

I was hoping to find a way to reprogram to need less sleep.  Maybe I will have to settle for fitting more of my workouts in before I go to work.  I know that recover/rest is an important part of training and improving; I was just hoping to find a way to fit more hours in the day...

All of you computer/science geniuses out there -- this is the thing to invent -- Download the amount of REM sleep you need each night without actually sleeping...

I am in bed everynight by 9:00 PM. Some mornings I am up as early as 3:30 AM to get to the pool.

I go to bed ~9pm almost every day.  You don't 'reprogram'.  You simply become chronically sleep-deprived.  Not a good way to live in my opinion. 

"To get 8 hrs, I would have to go to bed at 9:15."

Whaaaa! You're sounding like my kids.

I'm in bed by 8:30 if I can, just so I can get up at 4:20. Yes, people are wired differently.

For several years, I did just what you're wanting to do (though I wasn't training much at the time). I wasn't getting up any earlier, I was just getting to bed (much) later. I was averaging 4-5 hours a night all week. Yeah, I could function "okay". But what I found out after a couple years is that I just mentally did handle things well at all. I was "fuzzy" a lot, didn't think things through as quickly as I used to, etc. A lot of people were just telling me that it was because I was getting older.

After getting out of that situation, it took me a year to get back on track. But now I find that I'm mentally back where I was in my early 30's, before I got into the lack-of-sleep pattern.

So, more training + less sleep = burnout, injury, less mental acuity, etc...

Sleep is one of the first things that triathletes try to do without in the effort to get 25+ hours of stuff into a 24 hour day.  Recipe for disaster, burnout and fatigue in my opinion.  I'd recommend like others have that you find the time to get to bed earlier, or take naps during the day if at all possible.

Rest is just as, if not more, important for your training adaptations to take hold and for you to recover.

I can't do without sleep for very long.  I used to have get up at 5 to catch a bus to work, and after a year of being able to stay up until 11 or so, my body gave out and I started falling asleep around 9:30 no matter where I was (dinner table, couch, computer).

I'm curious why cooking with whole foods is taking up so much of your time.  We've been eating whole foods for years, and dinners don't seem to take much more time than they used to.  I pre-cook lots of stuff.  If I'm cooking 2 sweet potatoes for dinner, I might as well cook 4 or 6, and keep the rest in the fridge to re-heat.  In fact, instead of cooking them whole, I now cut them into cubes and roast a whole bunch to keep.

Same with oatmeal, brown rice, sauces, soups, etc.

And the slow cooker is your friend!  As is your freezer!  I always make a double batch of whatever I'm cooking, and immediately put half of it in a container with a note (date and what it is) and stick it in the freezer for the nights I need something that can be microwaved.  To save even more time, if I can anticipate when I'll be having left-overs, I'll take it out of the freezer the night before so it can start to defrost in the fridge.

OK... so that wasn't the actual question, but that's my two cents.

You have to just think outside the confines of your existing schedule.  Can you workout over your lunch? 

You will start going to sleep earlier if you keep getting up early, your body will eventually adjust. 

After getting up at 4:00 five days a week since September, 9 - 9:30 began to feel like a good time to get in bed and fall asleep to the tv.  The first month or two were pretty hard.  I identified with my son's hamster, who also got up in the middle of the night to spin his wheel.  Now, it's become such a routine that it's no worse than waking up at any other schedule, some days fine, others groggy. 

Prior to making this change, I used to wake up for a bout of insomnia quite regularly.  The new schedule has me spending the time in bed I need, while reducing those awful rolling-around-while-my-mind-races hours.  Catching some extra zzz's on the weekend is nice, though.