This weekend we tested the pump for the first time, and tried Aidan out on a bottle. He took to it right away (it might have helped that we think he's going through a growth spurt and was pretty hungry!), and didn't fuss at all. The best part was that Dad was able to feed Aidan - it felt great. The worst part was when he finished four-and-a-half ounces in five minutes and was still hungry!