I admire you for taking action and wish you the very best. I am not an expert by any means and my only comment / concern would be that if you are very ill, extreme cleansing without intense nutrition may weaken your body too much. Many of the diets that are prescribed for terminally ill cancer patients are nutrient rich usually by ingesting vege juices and raw foods (Gerson, Wigmore etc). As I said I am not an expert but perhaps this is an additional path to explore.
I came across this article that you may find interesting http://www.chetday.com/irenestory.html