One of my my 3 week old Lav. Sussex chicks has eaten a chunk of polystyrene overnight (been moved well out of reach now) & is standing (won’t sit) eyes half closed/closed & not moving around, leans against other chicks when they come near, wings a bit droopy. I know things can go from so-so to horrible really fast when they’re this small. Is there anything I can do to help her?