How not to forget what you have learned recently?

Question

IT education

I noticed the following with myself: while working on a project, I studied a certain technology or tool. I began to work with him confidently, at a more or less average level. But a couple of months pass, during which I had to work with another project, and knowledge seems to disappear. Again you rummage through the documentation, you start to be stupid, "to climb into your pocket for an idea."
Not like the first time, of course, something remains in my head. But it becomes a shame, because you can’t learn how to work really efficiently - when you write code almost on autopilot, and look at the documentation a maximum of a couple of times a day.
Have you noticed something similar? How do you deal with it?

Answer 1

You don't have to fight it. If you remember everything to the details, your head will burst.
Make notes for yourself, keep some notes, pieces of code. Structure your knowledge with links to useful articles that you can read if necessary.
But constantly keeping in mind the knowledge that you do not use is a direct path to a psychiatric hospital.

Answer 2

As for me, memorizing absolutely all the information is not necessary. The main thing is to know where to look for what you need to work at the moment. If you learn a technique and then move on to something else, then it is only natural that the brain switches focus and tries to remember new and more relevant information (relevant at a given time).
However, if you think that this is not the case, then here is an article on how to memorize new information with high quality . I really liked the Leintner system, which is mentioned in the article.