I run into the same problem, be it technical or otherwise. So I read less to _know_ and more to be aware. Once I'm aware, and I retain that awareness, then I can reach for that thought when I need it (e.g., grab the book, or search for it). Do that enough times and it'll sink in.

Put another way, go back to your college or high school years. We didn't just read. We had to study. We had tests. It was about repetition. Being an adult doesn't change that process.