It depends what the interview is for, and also the backlog at your own local office. There is almost always at least a three month gap - because they do FBI checks after biometrics.
It all depends on what your interview is for. Asylum? I-485 based on relative petition? Citizenship? These are all very different. The bottom line is USCIS never gives stated interview wait times. They're just estimates which means USCIS is free to interview people whenever they want and however they want. This is because immigrants don't have rights. They have the privilege of using USCIS to obtain benefits they are not entitled to by law.
Please speak with an immigrtion attorney to represent you with whatever endeavors you are completing.