Find your congress representative and on their website they will usually have a page titled like "Help with federal agency". Fill out the information and they will contact USCIS on your behalf to inquire: https://www.house.gov/representatives/find-your-representative
You can also submit another inquiry yourself that your case is beyond the expected processing times, and maybe explain it in detail and also inquire with USCIS ombudsman. If I were in your situation, I would just go with the congress rep first and see what happens.
You could also call them and ask instead of using the website. You will have to go through the automated menu and try to speak to a person, then difficult as it may be, explain to them politely that your NOA 1 is on whatever date, and it is beyond the expected processing time.
HappyGuy8 got a reaction from Ok-Mix in FEBRUARY 2022 I-129F K1 FILERS
HappyGuy8 reacted to a89syd9a in What do I do when I reach inquiry date and get no useful information? [merged threads]