I Have Worn A Shortish Cast On My Foot/calf For

I have worn a shortish cast on my foot/calf for 6 weeks for an inflamed tendon that goes under my arch and up the inside of my let. There was good improvement, they took the cast off 9 days ago and I am wearing a brace. They gave me 1 simple exercise to be done twice a day. I am not to drive, walk but a very short distance and not spend much time on my feet. In a month from when the cast comes off, they will see about adding activities. Other than inactivity, what would you suggest?