That goldfish story was never true. It's been going around for ten years: eight seconds of attention, less than a goldfish. There's no study behind that number: it appeared in a 2015 marketing report, and it has been debunked several times since.
What has actually been measured (in Gloria Mark's field research at UC Irvine) is how long, on average, a window stays open on a screen before another one is opened: about two and a half minutes in 2004, down to about 47 seconds in later studies. It's a figure about how often we switch screens, not a verdict on anyone's attention span.
We don't promise to fix anything here: you book twenty-five minutes in which another person has committed to being there. What you do with them is up to you.
From a 2015 marketing report that quoted a number taken from another source, without it ever going through real scientific research: it has since been withdrawn and debunked several times.
How long, on average, people stay on one window of the screen before switching: from about two and a half minutes in 2004 to about 47 seconds in later studies, among people working at a computer.
Two things you can check: a timer that records how many minutes you worked, and booked video sessions with another person at a set time.