I wouldn't recommend a prolonged use of baking soda due to the fact it can quickly transform the pH of your gut and make it far too alkaline. The overall pH of your intestines is naturally acidic. The max I have seen people use it was for 30 days. Further use will cause issues due to creating an environment that will benefit the candida. You should also know that the Candida itself is actively trying to make its environment more alkaline. One of the major byproducts of Candida’s metabolism is ammonia, a highly alkaline gas. When the ammonia is released into your intestines, it gradually increases the pH. Usually this will be counter-balanced by the acid-producing bacteria in your gut, but if these bacteria have gone then that balance is lost.