Apparently there are some people on the interwebz who think it’s a bad idea to get your kids to help take care of their siblings. These sanctimommies think that since you’re the one who gave birth, you have to do all the things for the baby till age 18. Maybe age 21.

If you are one of those people, leave now.

Ah, sleep. That long-ago dream. That faraway fairy tale from once upon a time. You remember it, right? Before you had kids, you used to sleep.

When your baby was born, you had a lot to worry about. How to hold him without breaking his neck. How to change his diaper without getting poop all over your hands. And most worrying of all: how to feed him.

Is your three year old driving you crazy? Does he hit, kick, and bite his friends? Has he been asked to leave his preschool or daycare? Have you been locking yourself in the closet to get away from him?

Is your baby normal? Probably. But you can’t be sure until you measure him up against typical developmental milestones. For every minute of your baby’s life, there’s a milestone he’s supposed to be working on, such as the ability to smile, clap his hands, or announcing that he doesn’t want to be your friend anymore. If he hasn’t reached the milestone by the average age, then you as Mom are authorized to freak out, complain to Grandma, and call your pediatrician. Chances are your baby is perfectly normal and just thinks clapping is embarrassing.