Tiny newborn kitten found alone in a box waking up purring

This tiny kitten was found dumped in a box all alone. We’re estimating he’s about a week old but only weighs what a newborn should. He was severely dehydrated and cold when found and it took subQ fluids and hourly feedings for a day to get him feeling better. Here he’s waking up from a nap on my chest (the warmth and heartbeat make abandoned babies feel safe). So far he’s doing great and a bottle baby foster is caring for him. His little purr is the sweetest sound!