Prepare for a high ball by starting your swing early. As the ball is coming down, that’s when you should start your swing so you can catch the ball on the rise. If you wait for the ball to bounce before you start your swing, the ball will end up bouncing too high and you’ll lose control.
The other benefit of starting your swing early on a high ball, is that it won’t matter what kind of spin the ball has as it bounces. You’ll already be moving forward and in a great position to attack the ball.