Hello, I'm in the same boat. I filled my case on November 3rd' 15. My case is ready to be scheduled for an interview as of Dec' 23. Please keep updated when you get an interview date. Boston Field office seems to be running late. I checked their field processing times as of Dec' 15, they are processing the cases from May'23. Looking at that pace and time, I imagine it might take another month or two to get a call. Thank you. Good luck.