Going to JMM (Joint Mathematics Meetings) for Jobs without interview invitations?
Unfortunately, you really will not know until January 2 whether you have any interview requests.  In my past experience, only about half of the JMM interview lists have been determined by Christmas, and some are not determined until right before the meeting.

Some departments are willing to do Skype preliminary interviews instead of Joint Meetings preliminary interviews, but Skype interviews can be hard to schedule, and a department that has already talked to a number of excellent candidates at the Joint Meetings has little motivation to schedule such interviews.

You should be aware that, for many jobs, a JMM preliminary interview isn't worth much.  I have heard of departments interviewing as many as 80 people for 1 position at JMM, though 20-30 is probably the usual number, and a few departments prefer longer interviews with only 10 or so candidates.

Finally, essentially zero research universities interview at JMM, though some of the top liberal arts colleges do.  If you are not interested in positions where teaching plays at least as important a role as research (and for most of the positions interviewing a much more important role than research), don't bother.