Just to get this out of the way, I’m still a beginner. Anyways, if you wake up one day and hardly remember ANYTHING, don’t give up. Write down those tiny fragments you hardly remember and are super fuzzy. I remembered one tiny detail this morning and was so upset, but I decided just to write it down anyways, and I got a huge two pages written down and remembered two dreams! And this is from starting up from maybe a year ago for the first night. So if I can do it, you can too! Just don’t give up. 
Sound advice and very true. Glad to hear of your success 