Make the challenge fit your starting point
Answer the first two habit questions. More details and sync come after. You can also keep notes in a private notebook.
Everything can stay on this device. Saving to your QuitSoda profile works when you open setup from the link in your welcome email. Setup does not personalize email timing.
Next step
Open the worksheet to capture your starting point and keep a simple daily log. Your challenge emails continue on their usual schedule. Setup does not change when they arrive.