iI've been served a subpoena from my ex (case regarding modifying his payment of child support due to the loss of his job). I didn't get his tax returns for I&E declaration served with subpoena and he refuses to provide me with them. I also believe he lied on his I&E declaration regarding his assets and marital status (he married last year, and a new baby was born, his filing status showed as Single). The subpoena wasn't served formally, just a regular mail. The date of hearing is not convenient for me also, I will have to miss work. How do I request his tax return before hearing? Do I have to go to court without any evidence that he lied on his declaration? Do I have to go to court at all or request supporting docs and reschedule?