Lost job after I140 approval

 I got my I-140 approved on 1st April 2020 and situation due to COVID-19 looks like would be laid off sooner. That being sad, if Laid Off, can I still transfer my H1B to a new employer using the approved I-140 which is approved but less than 180 days, and also my maxout is Oct 2020, which will not give me enough time to apply for PERM & I-140 id the approved I-140 is revoked by current employer. Please advise!