My 10 year old brother is an amazing lucid dreamer, and surprisingly he has a few strategies that work for him.

When he becomes lucid (usually through DILD), he puts a message in DC's minds/tells all the DC's around him that he is dreaming. And then he asks them to remind him of this fact if he loses lucidity. He says that this message from his DC's only triggers once he loses lucidity/forgets he is dreaming. I think this would be very interesting theory to test ^^