I would highly recommend you add urine to the fasting,
If you use fruit juices, it might not be so beneficial, they usually have an extremely high Glycemic Index, which means that your Sugar levels will not be stable. They will clean your colon, but urine will do a much better job, due to it's salt content. It might even help you get rid of the mucoid plaque. Urine Alkalizes the blood, which strengths your immune system. The urine tastes pretty good when your body is clean, you can add some water to it at the beginning and make it easy. Use the middle part of the morning urine, and drink it fresh.
For external use, put some morning urine aside, and let it age for 3-4 days. It smells pretty bad (Amonia) but applying it to your skin will do wonders. I would even soak cotton and cover the skin area overnight with a plastic wrap.
I really recommend "The Golden Fountain" by Coen van der Kroon, which sumarizes many sources.