personally, and this is in no way scientific, other factors are at play, not just the size and frequency of feedings, the cage/tub sizes, the daily activity of the animal (does it roam the cage a lot, or hunker down?), temps (steady 24 hours or flux every 8-12 hours), + individual quirks, Etc , i do not think there is a solid this is right or wrong way to do it. understanding your animals individuality and how you keep them would be the best place to start out. once you know that that animal and why you do it your way, you can adjust the feeding and other factors to get the results you are hoping to expect.