Is It actually Possible to Not Sit for 3 Weeks (after BBL)?

I read that you are not supposed to sit for 3 weeks after a Brazilian butt lift. Is that actually possible? What are you supposed to do for that long? Most people sit all day every day at work. It would be a nightmare to try and stand for that long. Especially if your office does not have standing desks. Do most people just take time completely off of work?