Need some advice. My DS is 21 mo old.
junebug2007, Hi and welcome to the Toilet Teaching board.
Many children show interest and then lose the interest, but it does return. Until it returns do not pressure your DS to use he potty, just follow his lead. My oldest DS showed interest in the potty, and a few days later he lost the interest, and about six months later he showed interest again, and that time he continued to show the interest. It all will happen with time. Please keep us updated on your DS progress.