I'm trying to learn to lucid dream but it's actually taken me an entire month to get my dream recall back. As a kid I used to have almost every parasomnia out there except for bed wetting. I had night terrors, constant nightmares, constant sleep paralysis and hypnic jerks, and on top of all that insomnia because I was afraid of the dark and understandably afraid of falling asleep. I wonder if it's a bit of a defence mechanism, my mind is like, "Nope, we're not giving you your dream recall back." It's coming back now, after a few weeks of a sleep mask and choline supplements (I'm vegan so an extra dose of choline isn't going to do me any harm, I doubt, and I don't take that much of it.)