For me those two changes weren’t directly related but I believe meditation can be very helpful in strengthening willpower and regaining focus on long term goals which is very helpful in the pursuit modifying patterns of behavior. For me it certainly works that way.

I was “lucky” in the sense that cannabis began having very negative effects on my mind so quitting was fairly easy. I know from other friends it’s not always like that so I wish you all the luck in your attempts to quit or cut down on your consumption.