Hey, you're going to do just fine. All you gotta do is relax :) & if you are off work or other duties it should be easier, but not impossible if you aren't.
When you say you'll be urine fasting I assume you mean looping?
I have a couple times (Im just starting out) drank alot of distilled water & saved the urine to wash with/bath in it sort of like a sponge bath but totally wet and then let it absorb completely, hair and everything. My skin and hair felt incredible, very full and hydrated. I don't wash my hair everyday, & it actually lasted much longer before getting oily and felt so much nicer, with dry skin also it is a life saver.
Honestly if you want to do a liver cleans I would wait until the 11th morning to decide, as you're body is going to be doing much detoxifying already.
Good Luck! I hope you feel better ~ and this is a great testimonials pdf
aquariusthewaterbearer . com /testimonials/