I mean if you married within 90 days then your spouse should be able to adjust based solely on the I-129F.
Might not be the worst idea to go around your lawyer and have your congressman or senator inquire on your behalf and see what USCIS tells them. It could be that the case literally fell between the cracks. That alone might unstuck it because someone will have to investigate.
If that doesn't help then WoM is the only other way forward.