Perhaps you might want to change brand like Merriers,Mamy Poko,Rascal,Drypers? Set timing before sleep, few hrs after that and in the morning. It might be cold or too much fluid taken at night causing your little one to have leak diapers. However, it can also be the diapers too. I was also using Huggies for my first born when she was few days old till about 1 years plus. Then, we change to Merriers. She's a girl and drink lots of fluid esp at night + She cant stand coldness hence of the leakage.