I'm pretty sure I had long COVID for about a year and I'm just getting over it. I felt slow and dumb as hell, all of a sudden I'm wittier and I can remember to do things.
For me, it was getting regular sleep and drinking less. It didn't have an immediate effect, but I slowly came out of the fog and realized I could remember things easier and workout without getting short of breath.
The interviewer goes on to ask: "Does that risk add up, or does each roll of the dice stand alone?", referring to whether subsequent COVID infections increase the risk of long covid. To which Ziyad Al-Aly replies: "That's really hard to answer."
He goes on to speculate (his word, not mine) that there can be two outcomes of COVID infections:
One, that each infection causes some sort of subclinical damage that increases the odds of bad outcomes during new infections
OR
Two, that the immune system may "learn" the disease and lead to milder outcomes in the future.
So in a broad sense, the above TLDR is true because your lifetime odds of getting long covid go up in a way that is vaguely proportional to your number of infections.
But it is NOT proven to be true that number of infections correlates to your odds of getting long covid during any one particular infection.