DD (3.3) finally out of nappies about a month ago, on 3rd attempt at potty training. It was going ok and she was using potty or toilet, and having 1 or 2 accidents a day, usually later in the day when she got more tired. So far, so good. Just lately the number of accidents has increased and she's had two this morning. She's normally been fine in the mornings. It's as if she isn't even trying. What do I do?