Hello! I applied for AOS with my husband in October 2019 and got the "ready to schedule for interview" mail in December 2019. I have since been waiting for the interview to be scheduled. I started out with an OPT(f1 status) EAD in September 2019. I then applied for an AOS-based EAD which will be expiring in April 2021. My question is, if we don't get scheduled for an interview by April, do I re-apply for an EAD? Can I legally work in the US if it expires?