Hi Ozzac, we have been at NVC since August 2021. Several documents had to be fixed in the first round of feedback (Jan 22) and then one last document was rejected (again) in the April 2022 feedback. We called NVC 3 times to understand why it was rejected, and the officers on the phone could not tell us. They put the document in for a review, which was supposed to take 4 to 6 weeks. We heard no news after 6 weeks, so ended up putting in an expedite request (totally separate reason, but we were waiting to see if we had to use it or not). Our expedite request got approved on 10th and I'll have an interview in mid-July!
All the best to you, I know the waiting and uncertainty is REALLY stressful.