Hi Jean-
I do not do what Rachel Heller writes about, but there is actually another plan that is on this site that is a one meal a day plan- it is a type of IF, and I bet you can look around some of those threads and find it. It is also a book that you can download- here is the link. I am not endorsing this plan or recommend it in any way- I have not done it and will not do it- but it is a plan.

http://fast-5.com/Fast-5-ebook100.pdf

If you read CAD you might also want to read a later book, like CALP.
Please let us know what you decide to do and how it goes-

E