Lewis' Mummy - DS used to wake with a totally saturated nappy every single morning. It was so full it was falling off him. It really only took a night or 2 before he worked out when to wake up, and he's been quite good. He still has the occasional night time accident, but they are few and far between. I expect them to continue for a while yet... I wouldn't expect it to just stop one night.

Good luck with it! I hope your TT journey goes well.