On CD you need to AAM - add a meal on week 5 - unless like LL you get Doctors consent. I liked AAM week in that it gave me some food to chew! and even raised my metabolism so I lost more the week after.
AAM is where you have a small meal (2/3 ozs protein, some green and white veg) each evening on top of your packs. It happens every 5th week on CD unless you get your Dr's permission to SS all the way through.