Hi Belinda, the reason my PN started was being in a prediabetic state, and low B12, in the time i have been here i have lots of posts were sugar even affects non diabetic PNer's so sensible eating is paramount.
People with a prediabetic condition and PN caused by full blown diabetes can be fully reversed, it is completely up to you, your doing well by the sounds of it and i am sure you will feel like a million dollars in time, it takes a while for nerves to heal and if you get some flaring, don't panic it could be the nerves healing, i had heaps of flaring of symptoms during the healing process but over time you will feel lessoning of symptoms, no one can put a time on it, all depends on how much damage there is to heal and how much you try to help yourself.
good luck, your on ya way,
Brian