Your tumor is quite large Rawrnr, so thankfully it is not malignant. Shelton did say that large tumors may need several lengthy fasts for them to be autolyzed, but this wasn't always completely successful, although they were reduced greatly in size.
Your best option in my view could be for the tumor to be surgically removed, and then follow healthful lifestyle habits.
I also said that regardless of the quality of your diet, this is only of benefit if there is a genuine demand for food: it is not what you eat, but what you digest AND Assimilate that prevents toxemia. A state of enervation will also produce toxemia and therefore the environment for the formation of tumors and other growths.