Welcome to the Night Club. These things are so individual but it’s good you’re reaching out because sometimes one bit of advice can make a big difference. I’ve experienced similar stretches during the last few years and I usually try things like sleeping earlier or meditating closer to bedtime to put my mind in a better state before sleeping. Andrew and others have mentioned that dry spells do happen in the course of nocturnal practices.
I’ve recently started doing some of the activities in his latest book, The Lucid Dreaming Workbook and that is helping me take the pressure off not remembering dreams. Some dreamers who contribute here are doing a lot with breath work, as well. Here’s a recent conversation that might be useful. Are you working with Dharma practices in your life? Hope this starts to help.