Ok, so I think I have a similar issue to yours just earlier in the process. I just came back to lucid dreaming hobby after years of absence, and now I have been working on it for two weeks. I have brought my dream recall up from virtually zero to 1-3 dreams or at least dream fragments every night, and I had one lucid dream.

And now my mind has decided to fight back. I have had a dream questioning the importance of writing down dream fragments. I have had one incident of a false memory that I had already written a dream journal entry and did not need to write it any more, whereas I actually had not written it yet, and by the time I realized that, I forgot most of the dream. I think what is happening in my case is that this takes a lot of effort, and part of me is lazy and does not want to put in the effort. Also since I have had a bit of success in improving dream recall and the one lucid dream, my mind is now a bit cocky and looking for shortcuts in the effort and thinking let's not bother with dream fragments but go only for the big important stuff. Impatience is definitely part of what is going on here. Of course my conscious mind knows that it is way too early for shortcuts, and since most of my dream recall is fragments, I know I cannot drop them, plus my conscious mind often finds those gems of dream fragments really fascinating. But it's not my conscious mind that has decided to cut corners, it's my subconscious! So now I need to bring it back into the program.

Do you think that what is happening to you may be like what is happening to me?