Keeping baby dry at night

Saartje

Hello! My son is 17 months old. Lately he’s waking up a lot at night because he’s all wet. His onesie, PJ’s, even his sleeping bag all wet. We use pampers premium protection nappy pants. I guess he pees a lot at night 🤷‍♀️ any tips how to keep him dry all night??

He goes to bed around 19u and at 3 he usually wakes up.