Eczema Diet and Detox support

Hi I remember reading in eczema detox book by Karen that there were a certain amount of fruits and veggies servings per day, was that a hard and fast rule or a suggestion?

Today is day 1 of detox diet for our son, so I'm also trying to find out what foods to start out with on week 1 , probably low sal foods. But what about week 2 and 3 etc... Is there an updated schedule now? I signed up for the membership thinking we had access to the programs,but apparently not. So in the programs and menus what exactly are is in access level?