Try this condensed mantra...

"Im aware... Im dreaming..."

after a while the I's seperate and its as if the mind actually segments...

Let the dreaming I relax and really let go, then come back to the aware I.

You might vibrate one in the head and one in the stomach area...

The dreaming I asserts itself, then the aware I, and because youre steadily going back and forth between the 2 when you start dropping into dream space you have a good chance of remembering your "aware" self...

I was doing well with this one last night until I just fell asleep...