I'm not a pediatrician but I run SourcingXpro and we supply baby items for brands with strict MOQ near 1000 USD, so I track diaper burn-rate because it drives carton math. With my son in Shenzhen we did about 8 a day in month one and dropped to 5-6 by month three. So a new parent who stocks 600-700 for the first 90 days is roughly safe. The trap is sizing drift. A baby can jump out of a size in one fast growth spurt and you get stuck with dead stock like a bad run of packaging. Better to buy tight and restock on a two-week cadence than hold too fat.
Hi! I'm a newborn photographer, and my newborn sessions typically last around four hours. During that time, I take care of everything to keep the baby comfortable, including diaper changes and bottle feeding when needed. From my experience, the number of diaper changes really depends on the baby's feeding type. Breastfed babies tend to have more frequent but smaller bowel movements, so I might change up to five diapers during a session. Formula-fed babies usually poop less often and more predictably, so I may only need to change one or two diapers over the same period. I always change the diaper right away if there's any poop, even just a tiny bit, since the digestive enzymes can irritate a newborn's skin very quickly. I also change the diaper once it's more than half full of urine to keep the baby comfortable and dry. In short, I've cared for babies who needed a diaper change nearly every hour and others who only needed one or two over several hours—it really varies based on feeding and each baby's routine.