Had to go back to my desk job 11 days after BBL. Hear conflicting stories about sitting so early on?

Had to go back to my desk job 11 days post op after BBL. I am so worried of killing my fat cells and hear conflicting stories about sitting at this stage so early on. Can someone provide their experience? I have been sitting on back of my thighs with butt lifted up a little off the chair. I tried the pillows and they are just way to uncomfortable and obvious to use here at work. Will I really be killing my fat cells? I really had no option but to return to work this early.