I agree with Ricalynn, the baby part was relatively simple. Now the teen years, woo doggy, were those my most troublesome times! Even on their best days the free will system let them act like little rebels.
I must admit I'm a bit of a nut in terms of nooboo practice. I've done games trying to see how many kids a family could have (basically this challenge without aging restrictions), games created with one adult and seven adopted babies to see if I could handle it, games done trying to figure out the strange genetics system (involving many, many test babies), and even a game seeing how many generations I could have under one roof if every child aged up as soon as possible then had a baby as soon as they became a young adult (my record was six generations). After enough of those kinds of shenanigans you get a method for the nooboo madness.