My son caught his whole career which included little league, travel and D1. He did pace his throwing effort depending on game situation. He would many time just lob the ball back to the pitcher and 1/2 effort on the throw down between innings which worked a little as a decoy, lol. Over the years he did have issues where his arm would weaken during the course of the season. No pitch count was implemented but have him be mindful of his arm and how it feels. It is also just as important to have a strengthening program for a catcher and not just pitchers.