morning

Hello, everyone, i belong to ScheduleA catalog, i know this kind of visa is rare here, i hope someone could give me some information about it. my case forwarded to GZ on 15, March. however, the staff in GZ said there isn't any information on the computer for my case and it will take 120 days for them to put the information on it. i wonder how long it takes for scheduleA wait in GZ before the interview date ?