I'm Surrounded by Infants Challenge Rules

I think having 7 infants at once might be feasible in a small enough house - you know, so you don't have the whole "the sim takes half an hour to walk from the kitchen to the nursery" issue. It's super weird, I'm not playing this challenge but in current game where my sim now has 32 children, the oldest kid was the only one who autonomously did homework (and even extra credit!), the other first like 10 children never did homework without me telling them to. But then by kid 15 they all do their homework autonomously and pretty much as soon as they come back from school.

But I've ended up with 3 infants at once and it drove me insane. Good luck to anyone doing this challenge! Especially the 7 at once option! :#