my case is in Vermont but not lpr, USC filing for a spouse. still not approval after almost 15.5 months

f2a has retrogressed. check visa bulletin to see if your PD is earlier than Date of Final Action

@Me Sh currently FAD is 1 January 2018 for September Visa Bulletin that means they are almost 5.5 years behind!! before that FAD was September 2020 but now they took it two years backwards.