I would recommend that you apply now given the fact that EB-2 NIW are getting approved with high rates of success. Do you have your Masters degree? Casseus Law got me my green card. I have a Masters and PhD. Rachel specializes in getting researchers their green cards. Many of her clients do not have PhD degrees. She has been successful in getting case approvals for people with no advanced degrees and no citations. NIW is self-sponsored, so you do not need the blessing, or even the support of your PI. Casseus Law does free green card evaluations. Here is the link:
Please tell Rachel, and the Casseus Law Team that Dr. Kim sent you.
Best of luck on your case!