Who says that meetings have to be some increment of 30 minutes? If you have completed what you need to do, feel free to end the meeting early. In fact, you should try to always end meetings early. If you can estimate better, try to shrink it even further. If you can have the meeting in 15 minutes, or 10, then do so. Sometimes when you are in the middle of a string of back and forth emails, a quick 10-minute call can be just the thing you need to get the answers you need. Don’t stick to the clock, end meetings when the productive work is done.  support the show: https://anchor.fm/60usefulseconds/support