I ended up getting some subsided visits to a podiatrist through my GP.. I, too, was at my wit's end though thankfully not reduced to using a walker. I've got tender feet, achilles tendonitis, plantar fascia issues, numb toes, myalgia in my legs...blah, blah blah.
The podiatrist, predictably, wanted to sell me orthotics. I succumbed and that was a waste of $180, though I had to try. Then she taped my ankles and half way up my legs. That helped, but then I got a reaction to the tape. Ive paid for massages, bought reflexology balls and tried aaseries of stretches (worthwhile)
The thing that has given me some relief putting my feet on one of those circulation boosters. That in itself can be a bit painful but if you tinker with the settings it does seem to help. You can't use them if you have clotting issues but it is something you can try while sitting at your desk working so it doesn't take up extra time. It might be an idea to see if you can borrow one to try. I still hobble like an old crone when I get up in the morning or get out of the car, but it's made sitting at the computer more bearable.