Here is the TLC schedule for Little People, Big World for the next while. Season Four Part B is slated to begin sometime in February.
You'll be able to catch some repeats until then. They have changed their line up from previous years. You might recall previous seasons of Little People Big World used to air in the mornings at 11:30am. They will now air weekdays from 4pm to 5pm.
Starting tonight, the show will return to the regular Monday 8:00pm slot, but they will be repeats.
In summary, until new episodes start up again, you can see repeats weekdays from 4pm to 5pm and Monday nights at 8pm.
Another reminder, next Tuesday January 13th at 7pm is the big day when TLC will finally air the original pilot episode, Little People, Big Dreams.