REM Dreamer and Dream Recall

[Noodles]

Ok so about a little more than week ago I discovered what lucid dreaming is and I really want to do it. The problem is I have absolutely no dream recall (at least I think). I remembered a false awakening like the day I discovered lucid dreaming, but that's the first dream I've remembered in very long time... I started using a dream journal about 4 days ago, but all those 4 days I have nothing to write... absolutely nothing. I try to stay still when I wake up but I still get nothing. I also keep repeating to myself when trying to sleep "I will remember my dreams" and still get nothing. I do though, have faint random thoughts and memories when I wake up during the night, but I'm not sure if this is from a dream or not. Would I be able to definitely tell if it was a fragment from a dream if it really was? I tried doing a WILD 3 times with no success, I did feel numbing but eventually gave up. I want to try setting an alarm, but I don't know when to adjust it because when I go to sleep, it takes me from 15 minutes to 2 hours to actually fall asleep depending on the circumstances, and most cases being around 30 and 45 minutes. So I read set it to 6 hours after you go to sleep, then every 90 minutes after that, but its kinda is pointless if you don't know exactly when you fall asleep. I read that if you wake up during or right after REM sleep, you have a much higher chance of remember your dreams. So if I were to get the REM dreamer, is there a way to set it to where it purposely wakes me up after a delay during REM, or right after it doesn't detect REM anymore? That way I would hopefully remember them better, and when I do I could use it to get lucid. So any thoughts?