Hey there. Welcome to the forum. :)
Most of us who have had the LIS were able to resume activities at about 2 weeks post-op. I'm not sure if 5-6 days will be rushing it. I would get a doctors note just to be on the safe side. Things can be a little sore after the surgery and sitting may not be all that comfortable for extended periods of time. You will also need to take extra care with the baths and cleaning the area while recovering as it can be a little challenging in the beginning.
Take extra care to keep a safe diet , stool softeners and water while recovering. Don't stop anything that has worked for you keeping the bm's soft before surgery. I know with school and everything, it can be kind of crazy, but it's really important to take care of yourself post-op for a long time after surgery.
Good luck and congratulations on getting the surgery and moving on to healing!