I use a similar but somewhat simpler method: whenever I read something, immediately after I have a finished I try to write down everything I remember. That has helped me a lot to internalize the material.
Another method: in subjects I'm deeper interested, before starting to read, I scan the chapters and headlines and write down what I expect to learn and what I already know.
That is awesome. Reminds me of Barbara Oakley's Mind for Numbers; she tells her students to practice recall rather than rereading the material for learning.
When I am reading to converse, I am inclined towards not looking at the original text while writing notes. This helps me capture the material into the right context, as well as remember in the long-term.