I am currently waiting for my final visa interview since my priority date became current just last July. The target date of the interview may be between December to May (6-9 months from priority became current, right?) As of the moment, my civil status is single but I'm planning to get married soon but the schedule might be only after my final visa interview. Will I still be able to include my husband in the petition? If so, what should be done and what will be the range of months for the processing time?
It is difficult for me to plan your course, but the law is relatively simple. If you get married BEFORE green card approval, your spouse is entitled to "follow to join." That process tends to be quicker than if you get married after you get the green card approval.