Simply asking people "when do you think you'll get this done", writing it down and then following up at that time makes teams so much more effective, it's mind blowing.
Learned this the hard way early in my career. Gave someone a task in Excel that should have taken about 20 minutes with a little formula work. Checked in a week later and they had already sunk 30+ hours in to doing the task manually, with no formulas!! 🤯