Congratulations! I wish you all the best on your upcoming interview. Please do update as soon as you get naturalized, which I'm pretty sure you'll get on the date of your interview. We both share almost the same situation. I have my pending application on removing conditions of my greencard (from K1-visa). I filed the removal of conditions last May, 2017 and still waiting for feedback. I qualified for the citizenship last June but I only filed online N400 application last month, July 2018. Completed my biometrics on July 29, 2018 at Tampa USCIS office. Now my online status for N400 application is estimated to be completed in 9 months (May 2019). But my pending greencard removal of conditions status is still the same since February this year, that my application was received at my local office. I was never invited for interview in any of my greencard applications. I just can't help but be anxious as things are all up in the air for me. I don't know if I need more requirements to suffice my application for the pending removal of conditions and why I am not receiving any letter to indicate anything I need to comply to. I do pray mine will be as smooth as how things are going for you now.