Welcome! I agree with @Eberechi as well. While you are waiting for the call, I would say make the corrections in the i-130 form and write a letter (MS Word) explaining the mistake. When you receive the call, hopefully Tier 2 agent should be able to correct it, but they might asked for the corrected form. So while you are waiting for the call, re-fill the form to be on safe side. What I have seen is that once you submit the RFE, they approve within 2-3 days usually