I didn't do 90 in 90, but for the first 2 months, I was in IOP and went to meetings on the days I didn't have that. Then I went to at least 4 meetings a week after that, too. Now I go at least twice a week. I also had a sponsor within a couple of weeks. I listened, too. I knew I had to do something different than I had done my other attempts at quitting. So I listened to the people who were successfully sober and did what they said. 90 in 90 is a great place to start.
I have 644 days.