Another common thing is we get so caught up in are current life and over stress ourselves. If life seems to be crashing down and you find yourself cramming in school, work, etc. your brain is going to focus your activties in trying to sort all this out; which may leave your memory state pretty garbled up. It happens to me a lot. I find myself so busy that my brain is spending so much time sorting through thoughts instead of focusing on remembering things like dreams.
Just an idea of maybe why ur dream recall is less? or maybe i'm just weird BINGO WE HAVE AN ANSWER!