I worked from home the day after my op, and went back to work properly as soon as I could drive. Not sure why you would need a phased return, if you are office based and able to get to work, why would the ankle not allow you to do your job if it’s not a physical one? Apologies if I’m missing something!
EDIT: Sorry just read your latest posts. Is your job a desk job? Can you not simply elevate it when it needs resting? I had no issues doing that during lengthy board meetings