You can't "walk off" a sprained ankle, that's ridiculous. It need time to heal. You can however still use it minimally as long as you do the things I suggested above.
A sprained ankle needs to be elevated 2 to 3 hours. It needs to be wrapped and iced as well every 3-4 hours. Only if this is done can I possibly tell Prim that you are able to use said ankle.