I have no idea if it helped or not, but it didn't cost me anything, so worth it just in case. I didn't receive a response from the Congresswoman to indicate either way. I see that
@Nicdep (same FO) was also scheduled, so it could just be that the FO finally got around to scheduling their interviews... I guess we'll never know!
FWIW - I looked at previous years average wait times for my FO, and determined that my wait time was significantly longer than in previous years, which warranted a congressional follow up (armed with that information).