He is fine weeing in the toilet and has been for ages but he cries for a nappy when he needs to poo. I have suggested he use the toilet or a potty but I havent been more forceful than that as I dont want to make a big thing of it. But, he is 4 next month and I really would like to ditch the nappies soon. Yesterday I took him to a toy shop and he chose a toy, we bought it and I put it away explaining he could have it after his first poo in the toilet/potty. He was very keen and he did try but just cant do it for some reason. Any ideas?