Also, as far as I know, the oil life monitor also takes into account time with the maximum time being 12 months.
So if you change the oil as suggested above at 50%, you would be more certainly changing the oil at no more than 5,000 mile or 6 months from when it was last reset.
Or you can interpolate the interval you want, knowing that 100% means 10k miles or 12 months. For example, 60% oil life balance would mean 4k miles or 4.8 months.