Worked remotely in NJ, live in Florida

We lived in NJ for 3 months and moved to FL. Both me and my husband worked remotely for a NJ company all year. We both withheld for NJ for the 3 months we lived there.

Do I have to file a NJ-1040 AND a NJ-1040NR? I'm additionally confused about the "Convenience of the Employer Sourcing", does it mean that as a FL resident I don't have to pay taxes to NJ? Pls help 😥