We had only ever had a handful of dry nights with our 7 year old. She is a deep sleeper and some nights she was more than filling a pull-up. We were starting to worry about when the hormone would kick in that you read about on this board.
Sadly, it was starting to affect her confidence as all her friends seemed to be out of nappies at night and she was getting very self-conscious about it. I did some research and decided to try a CBT system I found online called 'Therapee'. It's not the cheapest option out there but it had wonderful reviews. It uses an alarm system - a pad under the child's sheet and there is an online progress chart plus fortnightly video tutorials. I know every child is different, but I simply cannot believe how well it has worked for us. The first week was painful (and tiring) with twice nightly wet sheets. The second week she got the hang of it and we only had a couple of accidents. We have now completed our third week and it was accident-free.
The Therapee site suggests that deep sleep, and an inability for the brain to respond to a full bladder is the cause of most bed wetting, not the hormone that we were waiting for. I'm so glad we found this solution and I hope my posting helps others with the same challenges. And no, I am not a representative of the company!