So I went a full week with giving yogurt daily 1 chobani cup for seven girls (5 full sized/2 banties), also dark leafy greens, oyster shell and cottage cheese. My soft egged girl finally laid a hard shelled egg (Yay! took over an hour to lay it). So It's been two days with just layena and oyster shell and today's egg was brittle . Honestly aside from spending a small fortune in yogurt what else can I do?