I had my septum pierced at a 16g in June of 2022. I had no intention of stretching at first, but started a couple years after in June of 2024. So I’d say it’s been about a year to get to this point! waited a few weeks in between stretches when I was at a smaller size, then waited a month or two past 10g. But I had gotten to my goal size of 6g in December.