Technically, the motion to quash should be heard before the due date on the subpoena, but this timing issue may not matter much, if the judge is inclined to grant the motion to quash as improper or overly broad. There are also other timing issues, such as when your subpoena was served and how much notice was provided and if you served the Notice to Consumer with the subpoena, which is required.
I was unclear what you are subpoenaing and whose records you want to see. Do you want your wife's employment records? Of so, why did you serve the attorney, when you need to serve the employer of your wife, or does your ex wife work for the attorney? I think you may need your own lawyer to ensure that the procedures are followed and you get the proof you need.