Health-related questions/treatment methods

I have been suffering from toenail fungus for several years. Due to the doctor's advice, I have not been able to take medication and have been undergoing long-term treatment, but it is still not resolved. However, three months ago, the doctor recommended that if I apply a nail polish-like medication for toenail fungus, the nail would become thickened, making it difficult for the liquid to penetrate inside. So, I was advised to keep the nails clean and then apply the medication. After doing so, I think I am seeing some improvement now. Since I have endured this for a very long time, I want to be treated as soon as possible. If you have any good treatment methods, please advise me.