This is a very painful condition isn't it! I visited a podiatrist who confirmed my self diagnosis, gave me some exercises and advice on footwear. The most important is slippers; she said she was astonished at the number of patients she has who spend money on comfortable shoes and then slob around at home in £2.50 supermarket slippers which are nothing ore than felt covered cardboard. If you are at home all day, spend as much on your indoor footwear as you would have on shoes to wear at work all day was her advice, and although an initial expensive outlay of around £50, the Haflinger wool clogs (handmade in germany) are still going strong after 3 years which included lockdown therefore almost continual wear. Perhaps too much info, but despite this constant wear, because they are pure wool, there is no feety smell. I bought DH the equivalent from Birkenstock. too.
I did the exercises she recommended, wore an arch support for a few weeks, but have had no further episodes of this painful condition since I started wearing decent supportive footwear in the house. I hope this is of help, you certainly have my sympathy.