Don't be fooled if they don't look tired.
It can be easy to assume that your child isn't tired enough for their second nap anymore by they way they look, but Spivak warns parents it's not a foolproof method. "Your child might not look as tired anymore from at least two hours after they wake in the morning . . . which can make parents believe that their child is not tired enough for a second nap," Spivack said. "This is usually a misunderstanding, and not truly a sign they should drop to just one nap per day."