So my husband has an F-1 (opt) visa. He's been here since 2016. His opt began in 2024. We began the marriage based green card process in January 2025. He received his EAD in March. However, the green card application is still processing, but his visa is expiring in July of 2025. Should we fill out the form I-539, or is it okay to wait until the green card application processes. I understand without this form and the green card is denied he has to leave, so should we do it as precaution? Or is it necessary because his visa is expiring?