Dishwasher Tip #1:
The water seems to take longer to drain?
Have a look behind and check that no hose is kinked. Other than that, when was the last time you checked the filter? On most dishwashers, the filter in down the bottom inside the tub. unscrew the cup and pull it up to remove anything blocking the water flow. You’ll be surprised to find a wide range of unexpected items such as tooth picks, seeds, broken glass, etc.