New discus were often skittish in my experience so maybe it's a normal adjustment phase... A lot of ppl will paint the underside of a BB tank or tape a sheet of paper to it so the fish can't see all the way down thru it - not sure how urs is set up but this might be an issue? U can also try sheets on the sides and back of the tank for additional security. Background light from a window with ppl's shadows moving in front of the tank can startle them too. Joey's guys never came out for the camera in the beginning either