Did you have any PN symptoms prior to starting the Propafenone? And are you on any other meds?

It can take a while for your nerves to recover. Have you had your B12, folate, homocysteine levels checked recently. You may need to do some nutritional support to help your nerve recover. Recovery can be misleading in that you can have a increase in symptoms for a few days or weeks as the nerves recover. These episodes are usually followed by a reduction in symptoms. You can then plateau for a quite a while before the next recovery phase starts up again.