[ Law & Ethics ] Open Question : Pre-trial conference in 1 1/2 weeks. Just found person I want to subpoena. Is this part of Discovery or when can I do this?

Almost 7-years ago, I terminated my lease by state statute as a result of domestic violence living with the person. I served the apartment complex to terminate my name, but they are now claiming they have no record. They are suing me. Being really young and not knowing at that time, I didn’t save a…