Keep in mind that supplements often take a while to help repair the damage that has been done to your nerves. You said you took metanx but it did nothing for you. There isnt a quick fix for nerves. Except for toxins and physical trauma, they take a while to reach the level of damage that is measurable. They grow very slowly and repair can be spotty. You may take b12 for a year before you notice a difference. Learn what you need to provide a healthy environment for your nerves to regenerate. Strict control of sugar levels, diet, supplements and exercize (what you can do when you are able).