You are recommended not to rinse plates before putting them in the dishwasher. It says so in my dishwasher instructions and it is a waste of water and any watersaving advice sheet says not to do it.
I just scrape any debris on a dinner plate into the bin and put the plate in the machine. I wouldn't dream of rinsing mugs, cutlery, or plates or bowls that have just had bread or cereal in them. On occasion I fill cooking dishes with incrustations round the edge, with water and a drop of detergent and soak them before putting in the dish washer.
I also use the short wash, not the full cycle. it is quite sufficient. Modern dishwashers are designed to use very little water and be economic with electricity. With two of us I only run it once every two days and the amount of water saved over constant handwashing must run into 10s of litres.
Changing from a Manual car to an Automatic after driving manual for around 50 yrs


