I think it also depends on how you are feeling about recall as well. I started out great, remembering and writing down 3 or so vivid dreams a night. Then, as I became a little disenfranchised with LD'ing (through a lack of them) - my recall suffered. Last night I woke up at 7 - remembering nothing!!! Usually, I wake up at 3, 4, 5.

So I suppose just wait - it will hopefully get better!