What shall I do???? (Any advise will be appreciated)

The immigration law changed a lot in July. I got an job offer, which is good. 140 was filed in July, 485 has not been filed yet. Shall I give up my GC petition and start with the new company? I should file the 485 in my current company.

If I leave the company 180 days after filing the 485, I don't think the company immigrant lawyer will work on my case anymore. Would my case be lost?

What shall I do?????