My dd is rising and has been dry during the night since 2.5. Over the last 4 months she seems to have reverted back to wetting her knickers again. Sometimes I can be changing her clothes 3-4 times a day. I started off very patiently, saying never mind, then tried star charts. It's now starting to get to me - and after the third change today I found myself feeling really frustrated with her. Can anyone help?