How many different strains are in the probiotic that you are using? Look for one that has at least 10 different strains, the more, the better. If you are using a good probiotic, I would rotate in Kefir, not use them at the same time.
Coconut oil is not a probiotic, but it does have antifungal properties, so yes, start using it, 1 teaspoon per 20# of body weight. You can also rub the coconut oil into those infected areas.
Try adding ACV to water that is mixed into his food, 1/2 teaspoon per cup of food.
