Why would you worry? Interview is a good thing, as long as it is a bona fide marriage. Do yourself a favor, hire an attorney to prepared you and your spouse for the interview.
Processing times have shortened considerably in recent times. Be happy, in the not too distant past it took years. Good luck.
714-560-0040. The answer provided is general in nature and because not all facts are known, it should not be construed as legal advice. The answer does not create an attorney/client relationship.
Around the Seattle area, adjustment of status through marriage to a US citizen is currently processed generally in less than six months. So, that you are scheduled for an interview in June is nothing remarkable in itself.
What you should do is prepare for the interview so that there is no question that you have a bona fide marriage and that you are issued the documents without further delays.
It's usually this fast for everyone.
Seattle Immigration Lawyer
Legal disclaimer: This answer is offered for informational purposes only. It is not offered as, and does not constitute, legal advice. Do not rely on this advice without speaking to an immigration attorney in detail about your case. This message does not create an attorney-client relationship.