at night when i start switching off the lights of each room to go to sleep, then my child starts screaming that he does not want to sleep. if i listen to him then he keeps playing and stays awake till 2am. else if i ignore him and shut all the lights and take him to bed, then he starts crying endlessly saying that he doesn't want to sleep. he keeps crying till 1hr. this happens everyday since last 1.5 months. please help.