Sorry, but I think this concept is nonsense; as does the doctor who wrote the linked article.
I think that based on a complete lack of any scientific study this is going to hurt, and is not going to work. You might just as well buy a Tens machine and electrocute your ear.
I’m willing to consider that some homeopathic or diet changes could have an effect because of the chemical composition of the endolymph and perilymph in the inner ear. And if there is a hearing loss associated with the tinnitus, it is often the case that properly prescribed hearing aids can provide relief in many sufferers.