I am no expert, but have u looked into Kidney Cleansing.? Andreas recommends a kidney cleanse after every 3-4 LF.
There is some kidney cleanse with Water Melon Seed Tea.
Also eating tons of water melons cleanses the Kidneys( I read). So What I did was, I juiced 1/2 water melon thru a juicer. Drank the juice and also ate all the pulp.
Juicing made it easier and faster to consume 1/2 water melon in one go!!
Watermelons will not hurt you. It can only do good. Also drink tons of water. Also wait for suggestions from other people. Hope you get better!