I used to have fairly good Dream Recall (about 2-4 recalled dreams a night), but recently, it has dropped to 0, and I haven’t recalled a single dream for about a week. Does anybody know what’s caused this, and how I can get my Dream Recall back? I really want to remember my dreams again. 
Most common causes would be…
stress
less sleep
waking up at wrong time (during or just after a dream gives best recall)
but dry spells are quite common, plus recall can come in cycles. Just do the things you usually do to remember dreams and the recall should come back again.
same thing happened here, except i havent been able to recall for over a month. Perhaps we should start trying the good ol DR techniques desciribed here-https://www.ld4all.com/guide.html 
This has happened to me too. I’m pretty sure it is due to stress for me been dealing with a big work load at school, and lots of crap at work. I am sure I will get my recall back once I get a little less stressed out.
I have periods of no recall sometimes.
It comes in a phase. Then my DR gets slowly better until it reaches the max, and slowly goes back down.
Kind of like the function
y = sin(x) + 1
My dryspells tend to hold on for long time, but somehow I manage to slip a dream or 2 during the dryspell
But my dryspells usually have a reason, especially stress, but as soon as I can relax better Im able increase my DR again, letting go entirely some days is another way to increase the DR 