Don't get too hung up on what I consider to be small details and don't beat yourself up ever with regard to nicotine intake. I smoked for 30 years and am off the cigs for 13 months. At the end of my smoking I was at 2 packs a day. Started with 24 mg, then 18, down to 12, then 6. After about 2 months on 6 mg I just wasn't feeling right and was chain vaping. Stepped back up to 12. After mentally beating myself up over that, as I felt as if I was doing so well and somehow "failed", I got over it. The important thing here is to get off the cigs.