There is no set amount of time that the 12 steps will take per person. Each person has a unique addiction story and therefore their time getting through the 12 steps will be unique to their situation.
As a way to gain insight into just how long the 12 steps will take you, most Alcoholics Anonymous sponsors and participants recommend committing to 90 meetings in 90 days when you are a newcomer. After your first 90 days, you can gauge where you are in the recovery process and how far you are into the 12 steps. Make sure you are focusing on using this recovery program to your benefit to help you fight for your sobriety. Getting through the 12 steps is important, but ultimately you’re looking to seek control of your life again.