Well, recall is based on a lot of things.

just to name the few:

time of the year (temperature/moisture can make your sleep uncomofortable)

what kind of foods you eat (some supplements/vitamins cause me to enter very deep sleep with no recall at all)

your motivation to recall dreams (trying too much or too little can have adverse effects) :/

How long you sleep - by far one of the most important factors. (for example I often cant remember dreams from the first 6 hours. So if you sleep only 7 hours, you may have trouble)

Recently I've found myself in a similar situation. -> I forget a lot of details and sometimes only remember the feeling from a dream.

I dont really know what caused it, but after I applied some real effort, my recall improved :/