Please help, my ds is 6yo and still in nappies at night and occasional days. He's quite tall at 4ft something and stocky and I'm struggling to get nappies that fit. He had washable nappies xxl but they're too small now. Pampers biggest size or their pull ups fit better but don't hold much and I still end up washing and drying his bedding every morning. So any tried and tested for older kids??