Hello ! Wondering if you have a sit down type job ?? If so, are you walking every hour or so ?? I was told by my PT that she had a woman put a skate board under her desk, and put her foot that had the knee replaced on it and moved it back and forth to help it get not so stiff. Unfortuantely, I have a job where I stand, so that didn't help me much. Maybe, do some of the excerises your PT has you doing at your breaks.
It will take at least 1 year for a full recovery. If I remember correctly, I elevated my leg at night and had pillows underneath my knee to help with the stabbing needle feelings along with the ice packs. Maybe before bed ride a stationary bike a bit, we borrowed one from our neighbor.
Deb 3/2012 RTKR