Catchers at that age often will make the mistake of going after the batter since that makes up the majority of the events when the 3rd strike is loose.
My son was catching in a travel ball tourney. Same situation 1st and 2nd and 1 down. I was sitting in the bleachers behind the backstop and the count was 1-2 or 0-2. I knew coach was going to throw the deuce and that pitcher bounced about 75% of them. The batter was clearly going to be overmatched. So before the pitch I shouted out on a swing and miss throw 2 or 3 if the batter runs.
Next pitch bounces, batter swings and starts running, kid blocks it, runners get a lousy jump because they don't move until the batter reacts and starts running. Son picks up the ball and throws the runner at 3rd out by 10 feet. Kid turns and looks at me and shakes his head and laughs.
Parent sitting next to me says "you watch too much baseball" I said "thank you"