Just a quick update. As I previously stated, did EB-2 NIW on my own, no lawyers. Did not use premium processing. I-140 was filed Oct 2021/ Got my passport with EB-2 NIW visa stamped end of May. It took us a year and a half to get everything done. The question of the lawyer depends on whether you are capable of researching the internet, immigration communities.
If you don't have a Degree, lots of hours and experience, you might not get approved with lawyers/without, but you can always try to make your case stand out.