The balls, made of composite leather, don't require breaking in at any step. Even after unpackaging, they are ready to play on the court. But, the simple leather balls need complete breaking. This break-in method is easy, and you have to do it two or three times consecutively.
See if the ball is no more sleeky and glossy after breaking it. And even check if the ball has taken a softer feel, then you will be free to use it for your official matches.