yeah JSM, when I was at school I still managed to WBTB. Maybe try friday or saturday nights? If not, then work on other Reality Testing techniques. These require more effort when awake, and less when sleeping. Which is the opposite of WBTB.

I REALLY like this guide, and had some success before I moved back to WBTB....maybe you will like it too

http://www.dreamviews.com/community/...ght=dream+yoga

its basically...a method where you TRY to be constantly aware of your surroundings. Therefore, you should be able to notice absolutely everything that changes. THe downside is it may distract you from other things...but if you are determined