I smoked for 9 years (Marlboro black/ red 100s, camel filter 100s, occasional swisher) and when I started vaping I was up to 18-22 a day. I drive a lot for work and I just needed to fill the dead time with something. I started with 18% in an ego, then dropped to 12%. Once I got my subox mini I dropped to 6%, 3% then zero. That was about a month's span in total. A step a week or so. I wanted to enjoy more of the vape flavor so I decided to get the nicotine out asap. It's sorta like caffeine. In certain things you taste that more than anything else. . Good luck!