The book does say do a minimum of 2 weeks on Induction, But, if you have a lot to lose you can stay on induction for up to 6 months. I did that. The book then says when you move into OWL you add 5 Gm of carbs per week, i.e. 1st week in OWL = 25 Gm carbs per day, 2nd week in OWL 30 Gm carbs per day until you stop losing. At that point you reduce by 5 Gm of carbs and providing you are still losing (albeit slowly) stay with that until you are ready to go into pre maint.
I actually upped my carbs by months not weeks as I was scared to come out of induction and I skipped pre maint entirely.