Laid off before 180 days of 485 filing

[Asinv3 0]

Hi All, Here's a snapshot of my situation: 

* AP / EAD / I-485 receipt notice date: 20th Oct 2020 

* I-140 was approved back in 2016

* Employer has given me a month's notice which means I won't with the I-485 filing employer for 180 days and I am falling short by a couple of weeks. 

* Another employer has offered me a job with similar roles & responsibilities and willing to file 485 J supplement after 180 days

1) Do I need to restart my Green card from PERM?

2) Will there be any issues with AOS adjudication?

3) Do I need to maintain H1 status or safe to go on EAD once Approved?

Thanks

Abi