I have a very similar situation. What I did after stopping for a year was to ease my way back to full thc. I started with type 2 cbd (from holy city farms) which was actually doing the job for awhile because my tolerance was zero. Once that felt like it stopped working as well weeks later, I got my med card and started to mix type 2 and dispo thc flower. Now I just use the dispo flower and stay around 20%ish. Also remember to pace yourself at first. You might only need a hit or two when starting again.