Don't worry, you don't have to start from the beginning, just stick to the techniques/RC's/DJ...and you'll break that dry spell in no time as long as you have the right mentality and patience..
as for your Dream Journal, try to scribble down anything you remember THE MOMENT YOU WAKE UP, and you can write the main stuff you remember as short notes without having to write all the details when you have school, and that should take less than 5 minutes!
Good luck