What about if you're having to add 1 qt every 1000 miles?

One of our vehicles consumes 1 qt every ~1800 miles or so. It is driven about 14000 mi per year. I did the math and we'd use less oil overall if we did two oil changes per year (2x ~7000 mi) with more topping off vs. 3 oil changes per year (3x ~4700) with less topping off.