My son also had the same difficulty, all of a sudden began to wet the bed. My wife and I were told that it may be the cold weather and that we should have him wear daily...long underwear, a union suit, wool socks, lined flannel pants and a wool shirt, sweater, a good hooded winter coat, hat and a pair of rubbers over his shoes. It has resolved the problem, but he doesn't like having to get all dressed up. However, he does prefer wearing the extra clothing over nappies and rubber pants to bed. Good luck! Joe