Nappy changes have become so stressful since my 15 month old decided she doesn't like them. It's really bad when they're dirty nappies. She screams as soon as I lie her down and then arches her back, tries to sit up and basically makes my life as difficult as possible! I've tried distracting her with toys and stuff, but nothing seems to work for very long. Anyone have any advice?! I think she needs to start potty training, but she's been quite late in weight-bearing on her legs, so can't manage to hold herself up properly yet.