I use mainly reusables on DD3 and the pampers for overnights, washdays. She is just leaking so much though that I have to change the wrap with almost every nappy change(I change her every 2-3 hours) and her nighttime nappies are soaked through in the mornng. She is just about to turn 2, is it normal to suddenly increase the amount they can wee at 2? And what can I put in the reusables to make them hold more wee or to make the wraps more waterproof?