Hello thank you for your experience. I am also on F1 and adjusting through marriage. My PD is January 19 and since March 11, the USCIS received my RFE. After that I got EAD but no news. I see other experiences taking very short time like 3 months at Phoenix office but others are not. Obviously yours took more time. Do you know why? Was it stuck at the security check or something like that? Thank you