I was just going to report about the results 
I tried your suggestion in the last 3 days (in which I had only 7 hours of sleep each night – because of school), with having a true intention and motivation of recording my dreams and waking up in the middle of the night, and quite suprisingly - it worked well! In those 3 nights I set my alarm clock after 6 hours of sleep, and at each night I had found myself waking up at about 15 minutes before the alarm was supposed to go off! I woke up immediately after a dream and wrote it down. Then, I set my intention on remembering more dreams when I got back to sleep.
So I got to a point which I have never been before in, at which I can remember about 2-3 dreams a night on school nights, having 7 hours of sleep at maximum! And at the last night I got to a point in a dream in which I was about to realize I’m dreaming but the dream had faded by the time I performed the RC. 
Thanks a LOT for your advice ypm! It motivated me to continue trying 
What I’m trying to do now is finding out what are the best times to wake up at when your sleep is limited to 7 hours or less, and make full use out of that sleeping time 