I'm surprised you need to do that much. I end up with probably more like 1-2 a year that need manual cleaning without ever prewashing.
We don't rinse our plates, just scrape them. If I have to hand wash 1-2 bowls and plates over the week it's a non-event. We're still saving a lot of water compared to hand rinsing all of our dishes before putting them in the Miele.