Hello and welcome to ADBB
Atkins says you can stay on induction for 6 months or more...but I believe he also states that you should be in pre-maintence by the last 5-10 lbs? In DANDR, Chapter 13 talks about OWL [Ongoing Weight Loss] and then Chapter 16 discusses pre-maintenance. If you don't have a copy of Dr. Atkins New Diet Revolution, you should get yourself a copy. Everything you need to know is in there. And if you can't find it, we can always help refer to which chapter the info is in!
Oh, and way to go on your loss!! Keep it up