Started at 48mg.. took a month and worked down to 36.. took two months, down to 24, took 6 months , down to 21, 6 months, down to 18 and back and forth to 12-18 for a while.. 12 finally took for a bit, and a quick down to 9, 6 and now for the last year at 3.. but I cheat since I DIY and bump up...