Ive managed to come off of 4 2mg xanax plus 4 2mg clonazepam (a day!)
that I was on from age 12-22.

The key to my success w weed anxiety was to make sure I take @least 1 puff of indica when I wake, then take roughly 3-4 puffs 10 more times throughout the day. Small steady doses seems to regulate my anxiety to a more pleasent, exciteable sensation.
If you're interested in trying this method I would love to hear how it works out for you! Good luck!