Not sure if anyone's posted this. But I read it in a book, I am yet to try it because of school, but will tomorrow, it sounds interesting.

If you want to encourage the occurrence of lucid dreams, extend
your sleep. If you are serious about lucid dreaming, and can find the extra time, you should
arrange at least one morning a week in which you can stay in bed for several hours longer than
usual.
Even though most people enjoy sleeping late, we don’t all have the time to do it. If you find that you just cannot afford to spend more time in bed, there is a simple secret to increasing your
frequency of lucid dreaming that requires
no more time than the usual number of hours you
sleep.
The secret is to rearrange your sleep time. If you normally
sleep from midnight to 6: 00 a. m.,
then get up at 4: 00 a. m. and stay awake for two hours, doing whatever you need to do. Go
back to bed and catch up on your remaining sleep from 6: 00 to 8: 00 a. m. During the two
hours of delayed sleep you will have much more REM than you would have had sleeping at the
usual time (4: 00 to 6: 00), and you will enjoy an increased likelihood of lucid dreaming, with
no time lost to sleep.
Some lucid dreaming enthusiasts make rearranged sleep a regular part of their lucid dream
induction ritual. For example, Alan Worsley reports that when he wants to induce lucid dreams,
he goes to bed at 1: 30 a. m. and sleeps a little less than six hours, from about 2: 00 until 7: 45,
when the alarm clock awakens him. He then gets up and eats breakfast, drinks tea, reads the
newspaper, mail, etc., staying awake for two or three hours. At 9: 00 or 9: 30 he writes down in
detail his plans and intentions regarding specific experiments or activities he wants to carry out
in his lucid dreams and then goes back to bed, usually falling asleep by 10: 00 or 10: 30. He
then sleeps for several hours, during which he frequently has lucid dreams, sometimes extended
series of them lasting up to an hour. 11
Redistributing sleep can be a remarkably powerful way to facilitate lucid dreaming. Be sure to
try it. For the small amount of effort, you will be more than amply rewarded.
Here is an
exercise to get you started.

Hope this helps some people, and I hope it hasn't already been posted, it sounds like a promising method.