Whenever you are fasting, I believe a cleansing enema every day is essential. With the particular program you are following, any day you don't have a natural movement on your own I think you would find an enema helpful.
Here are some links where you can get more information about how to give yourself a safe, natural and effective cleansing enema:
I recommend that you use one teaspoon of non-iodized Sea Salt for each pint of warm filtered or bottled water at 103 degrees F (39.5 C) at preparation time. And I find the Sims position the most comfortable and relaxing to take the enema.