Don't forget, when you do the water changes for the time being, make sure it's warm enough for him
. Don't give him cold water, that will never help. You may need to buy yourself a cheap $1 thermometer for this to help. Also, again, try to keep him warm.
I don't know how colleges work, but is there someway you can hide him in a second? (get a cardboard box, cut the bottom, and throw it into the tank and just make it look like a box)? Or have a place where the RA won't check? And how often do they check as well, or is it sometimes super-random?