Hi
Sorry to read the foot is so troublesome. My arches went after the first few yrs and now they don't hurt as much. You can have a joint injection in there.
In the meantime, Keeping your foot elevated, gentle full rotation exercises and try cold treatments (frozen peas in a towel).
You aren't alone and we know it hurts
Used to remind me of walking on pebbles
how to be a velvet bulldoser