It is impossible to eliminate a fungal infection with a diet.
If you don’t have any allergic reaction to Quinoa, I see no reason you can use it moderately.
The diet is to reduce food that increase the growing factor of yeast such as sugar and refined carbohydrates. This include Lactose and Fructose. Complex carbohydrates are less offender than sugars.
Candida won’t die even if you drink water alone for a year. It is microbe that survives most environmental conditions. Part of the infection is in your intestinal lining. I mean there are epithelial cells infected and blood sugar supply for candida.
People become obsessive with a diet because the ignorance that surround the internet about this illness.