After looking into this a bunch, I feel like one can over do it.
I've got an IM that I purchased in January. It has roughly 1400 plays on it (take into consideration an average game might be a matter of minutes - 1400 plays on IM is WAY different than 1400 plays on LOTR).
Anyways, since I've gotten it, I have never used Novus 2 as that is slightly abrasive. I figure after a year I'll use it. I have used Kit Wax, which is Carnauba, but also has a cleaning agent in it, which may have helped keep it clean (I used this about 4 times). I no longer use this as I don't want to use any cleaning agent on my playfield more than I absolutely have to. I also used Novus 1 the first month or so, but have read that it's not good for a playfield either, as you don't want a playfield to be wet at all or use anything to clean it that has alcohol in it.
What I do now is simply wipe it down with a microfiber towel once a month and have put Mothers Pure Carnauba Past Wax on it. The table looks brand new despite 1400 plays and never using Novus 2.
I stopped going crazy over cleaning once I talked to a collector who says he rarely cleans his pins and they look immaculate.