After visiting my husband in the us, I spoke to a lawyer that told me instead of dealing with the ds5535 just file within AOS which I did not know was possible. So now we filed for the AOS.
Hello, I had my interview last March iR5, got DS5535, and replied back in two days. No update and no reply from the embassy since July. I have recently filled mandamus. Let's see how thing goes, best of luck.