Keep doing the prep drink, if you're going to do one liver flush after another. Doc did them for 60 consecquetive days, but his story was a little different. He had to get rid of the anesthetizing agent that the bugs use to attach themselves to your body so they're not felt. It was shutting his liver down.
Most people don't have to do one flush right after another. You can leave some days in between times when you can recover from the last one. Your liver needs time to get all the junk out of it.