i used to be on board with that, that you had to remove things that 'fed' yeast from the diet.
eventually i realized that what actually happens is, ms diets naturally allow serum zinc levels to rise. that corrects a whole bunch of problems such as the potential for yeast overgrowth, 'leaky gut' aka intestinal permeability, etc.
the other option is to use supplements to correct any zinc deficiency, and in the long term, to consume bread etc in moderation and monitor zinc status.
i used to have GI discomfort when i ate bread, and i used to get positive yeast results from my annual physical. then i was off bread etc for a long time. finally i identified and corrected my underlying zinc deficiency. no issues since. whew!