It seems rather counter intuitive to run something more often in order to keep it operating, doesn't it? I'd say if you use the proper lube, it should last until the next time you need to use it. Having to go out to open and close your slide every 1-2 weeks to maintain it's functionality is not only inconvenient, but ridiculous.
Current: 2013 Flagstaff MicroLite 21DS
Past: 2000 Fleetwood Mallard 19N
TV: 2013 Nissan Pathfinder SL 4x4