Billy's Allergies

We had allergy test done on Billy. He's had 4 sinus infections since November. Turns out his allergies are high for Timothy and Johnson Grass. We have him taking Allegra to see if that helps with seasonal allergies. He was low for all the other items: Candida (I think this is sugar and yeast overgrowth), Mucor (a sugar fungus because it attacks the carbohydrates, so mold/house dung and soils), Alder, Oak, Dock/Sorrel and oh did I mention Milk, Wheat and Soy. So we are doing research and starting to change how we eat...