I’m afraid that you have already read the whole thread and I can’t give you any more advices. If I had such a long dryspell, I certainly would start again my DR practice from the beginning, that is using autosuggestion before going to sleep in order to remember my dreams in the morning.
I suppose you know the following tip? When you wake up and don’t remember dreams, (of course you don’t move) you make associations by thinking about random things: “a bat… a time machine… scampi… a street lamp…” until you feel one of this words makes you remember something from your dreams. Then you focus on this tiny feeling and you can sometimes remember a dream fragment, from which you can rebuild your dream in the reverse order, wondering what happened before. And even if you just remember a feeling or a fragment, you write it down nevertheless.
Do you practice a special technique in order to recall your dreams?