Now that they’ve all got their eyes open, they’re becoming a lot more active, as well as a lot more interactive, as you’ll see in this video. (By the way, you can right-click on the video screen and choose Zoom > Full Screen to get a better view.)
Also, based on their weight and the fact that each of them has been not hungry for at least one daily feeding, I’ll be changing their schedule tomorrow from every 4 hours/5 times a day to every 5 hours/4 times a day. They’re definitely growing!