From around 15 months onwards, look for signs that the child is ready.This might be small things like pulling at a dirty nappy or telling you they have just done a wee or poo in their nappy. They may even say that they don’t want their nappy. Your child may be so used to having a nappy on that they are a little worried about not doing a poo in their nappy. These are all signs that your child might be getting ready for the transition to use a toilet.