Out of curiosity, is logging newborn activities a common thing? Do most parents do this? What is the value in knowing the counts and times of your newborn's routine? Is there a good use case for historical data or trends?
And honestly, it's also to give parents a small measure of control over what's going on. When you're a new parent, it's a confusing and difficult time, and so recording what happens lets you feel in some way like you've got a handle on things. You may be exhausted and confused, but as you write your numbers down in a little book, life goes on. It's reassuring.