Do you think Bruce ever just forgets how many children he has? Like, okay, he has the six children he’s adopted, five sons and a daughter, but then there’s Terry, and the two Helenas, and is Barbara his daugher-in-law, he distinctly remembers going to the wedding but it may have been wiped from history for all he knows, how the fuck does Stephanie fit into it, which one of his sons is Starfire with at the moment, and then there’s Selina’s adopted kids–Holly and Karon–and she keeps calling the cats her children, like that isn’t confusing, and just WAIT FUCK HE FORGOT ABOUT HARPER
Point is, everyone thinks he only takes 3-hour sleeps because he needs the time to be both Bruce Wayne and Batman. Truth is, he needs all that extra time to keep track of all of his children.