

Probably. Take it to the shallow part of a pool (where you can stand up if you need to) and practice until you are comfortable trying more.
Also, watch some videos. I think it’s easier to learn something like swimming by watching others than by reading about it.
I doubt someone who has only ever read about swimming could do it in deep, cold water. But they are talking about taking it to a swimming pool to practice. I think they’ll be fine.