Sure, you can try it with a 4 pronged cane. It may be a bit more difficult not having as large an area to lean on but it could work!

Yes, my feet hurt sometimes too. Give them a good soak in some epsom salts and warm water, that may help. If nothing else they will be clean and smelling fine.

Good to tell your doc about the issues...I hope he can find something to help you my friend!