Nappies does not keep child dry at night.

I have been using Huggies for the past 4 years and the last 3 packs is really disappointing.My son is 4 years old and only use nappies at night.The nappies leak after just one urination.This is unacceptable because its disturbing my childs sleep.One nappie kept him dry through the whole night but now i have to change him 2-3 times at night and change his clothes and bedding.I only believe in Huggies and don't want to change to a different brand.I never had problems before but this is getting to much.My son needs his sleep and so do i.I wasted almost R600 on nappies that doesn't keep my child dry at night.I hope to get results because i dont want to be forced to change to a different brand.