this thursday will be the first my 2 y.o ds will be at nursery. we had this settling session for 1 hr last week and ds seems to loving it but start crying whenever i was out of his sight. i've tried to hide when he was happy playing but will start crying less than 3 mins. what to do when he stat his session this thursday? should i stay with him in the nursery or just say goodbye and leave? please help.