Ah, ok i think i get it. (tell me if I'm wrong)

one day you fall asleep and find yourself in an LD, you think about LWL: "I should now meditate so that I will have more lucid dreams in the future, by meditating when I'm {b]in[/b] a dream I'm not just meditating like normal, since I'm in a dream my thoughts are now meshed with my subconscious more than normal so the induction method will be more effective"

is that what you meant?

anyway if it is then i personally don't think it would work any better than if you did it while you were awake, the reason being that when your really lucid you usually don't think any differently then if you were awake, (your thoughts aren't meshed with your subconscious) but who knows until someone tries