i140 approved, i485 pending for more than 180 days. been laid off

Hi there,

I am on an approved i-140 and my i-485 has been pending since march 3rd. I also have advanced parole and EAD. My original visa was L1 and I also have a h1b status approved, but not been used.

I have been laid off and but I am officially a company employee until November 17th.

Is there anything I need to do to ensure my process is not wasted?

can I leave the country and come back before November 17th?

Can they ask for a prof of employment at this time?