I can't say, I am completely sure about it - but I believe that starting to do self-hypnosis has helped me no end.
When I did the first 3 sessions, I had short LDs associated (over the following 2/3 days) each time.
Then I didn't do anything for a couple of weeks and had no LDs.
Now after the fourth repetition, I got lucid three nights in a row - the last one of these was yesterday. And the last two were proper ones, not mini-LDs.
So maybe try it out as something novel and promising - I use this:
Instant Self-Hypnosis - How To Hypnotize Yourself With Your Eyes Wide Open
It has a protocol for recall and for LDing - I am in the process of adding my own suggestions at the moment.
Good luck!
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