When I started out practicing I tried to sleep 10 or more hours any night I could. Which ended up being on the weekends only. However, as my body is used to get up after around 7-8 hours of sleep, I noticed that if I slept over that amount I slept very lightly and woke up several times. It was during those times that I took my chance of getting lucid and basicly did a few mini WBTB's with MILD each time I woke up.

More sleep = More REM = More Dreams = More chances of getting lucid.

You don't need to sleep 10+ hours. But it'll give your more chances to get lucid and as you spend almost all your time in REM during the later part of sleep, you'll dream lots and lots.

If you can't get more sleep, perhaps you could try getting less one night? That's called a REM rebound. Or take some supplements which ought to boost your chances. The best is to believe in yourself though and work on your recall.