The first night you lay your baby down alone in their crib can feel like the longest of your life. Monitor in hand, room in darkness, and that question that won't leave you: is she okay? is she safe? At Petitblue, we believe peace of mind isn't something you improvise. It's something you build — step by step, with clear, evidence-based information. This guide brings together the current recommendations from the American Academy of Pediatrics (AAP, 2022 update) so that every n