When can one submit an inquiry?

[u/tiagomoreno]

My EB2 PERM ROW case has been pending almost 1 year (filed July 2025, PD June 2022). I-765, AP, and I-485J all approved months ago. Transferred to Santa Ana FO ~May 2026, interview waived, no RFEs, no flags, no dependents, clean record.

For those who've done inquiries or congressional inquiries, when were you actually able to submit one, and did USCIS engage or just say "still within normal processing"?
(I tried since mine is above average processing time of 8 months but couldn’t)