My dd is nearly 4, has been dry in the day for 18 months or so, but is nowhere near being dry at night. She has a potty in her room in case she wakes and needs to use it, and can get easily to the toilet from her room, but has never done either. She's dripping wet and needs her bed stripping almost every morning, although she tells me that she can never remember weeing in the night because it doesn't wake her up.
How do I start preparing her for going without a nappy at night time? What's the best way to try and make sure that she learns to wake up when she needs a wee? I don't really want to try lifting her, because she's such a good sleeper and I don't want to disrupt that. Any ideas for where I start?