I definitely agree it is not good to be stoned all day like that. I can't imagine how high your tolerance must be and how much you must need to smoke to keep a buzz going. If you're high that often, do you even really feel it anymore? I limit my smoking to late evening (10 PM) only. Sometimes daily, othertimes I go a few days without it. Sunday is the only exception.

Anyway, my advice if you want to slow down: Get rid of all of your weed. It's very easy to take your mind off it if it isn't there. If you only want to smoke on the weekends, just buy a few grams every friday, and smoke it all by Sunday. I'd also go a few weeks without smoking at all to drop your tolerance a little bit.