Gina has been waking up the last couple of mornings with her diaper, pajamas and sleep sack soaked. I'm currently using Costco name brand diapers which I've been using since she's about 4 months old and never had this issue. I'm starting to think that she might need an overnight diaper. Do you guys use a different diaper than your daytime diaper at night? If so, what brand do you find works best for no leakage?