Am I doing to the right thing?

Ga

So it took me an hour to get my 8 month old daughter to sleep, then a minute later my 10 year old comes in and screams at the top of his lungs to fool around, sure enough his obnoxious action wakes the baby back up, and I said whispering “Are you fricking kidding me John, I spent an hour getting her to fall asleep, so now I’m making him hold her till she falls back asleep. Do you think that’s the right thing to do? If he was 3 or 4 I’d be doing it but he’s 10 so he knew more than better to do that.