The way I see it
@TwelveCoffee is this: let’s say you do what I always used to do, which was to wait until the cup drains in 24 hours to bone dry. Then you up pot. When you do, you have a large mass of roots all around the plant, somewhat curled up at the bottom, right? A seemingly perfect time to transplant. But here’s the rub doing it that way - you just MIGHT lose a day or two of growth, due to the time the roots need to unravel themselves and stray into the new medium. Versus doing what I did here and now generally do - do it earlier, like as soon as the root ball will hold together. Then, when you up pot there IS no unraveling that has to happen. The roots just continue to grow out and the plant literally doesn’t even know the difference. See what I mean?