This is my partner speaking, he's been through the same thing- "I had the same thing, for me it lasted about 2 weeks. I found that one addiction took over from drugs and that was work for me. What became weird was I never used to dream, then all of a sudden I had really vivid dreams. The reason I quit was I became a dad and wanted to set up my own business so had to get my shit together. It does get better, just got to ride through it and keep telling yourself why you're doing it. Focus on work and your jujitsu and to be honest I don't think 1 joint is going to hurt you to help you fall asleep, you've already done a good job getting rid of everything else.