Is there a sanitary way to reduce our daily dishwashing?
You can reduce the number of dishes you need to wash my reducing your number of dishes. When I was living with three roommates, we had a terrible time maintaining the kitchen. I ended up boxing all our dining ware except for one plate, bowl, mug, and glass per person. We were forced to do dishes right away.
If you are not a fan of sponges (I’m not), you might want to get one of those soap-dispensing brush things. Back in the days before I had a dishwasher, that’s what I used. The brush head detaches, and every week or so I’d put a splash of bleach in a bowl of hot water and toss it in. I felt pretty good about how clean my dishes were.