One of the techniques that I usually use to get great results (and even if it seems like it doesn't work quite well) is play the role of teacher (or professor) when we study.
It is about seeing how well we have learned things to know if we are capable of transmitting that knowledge to other people. In reality there does not have to be other people, we may be talking to the same wall, but the conviction that we have about what we are explaining is what should help us.
For this we need a blackboard so that we can write down some kind of diagrams on it so as not to get lost. From that scheme we develop the topics that we are learning so that, by saying it out loud, our mind assimilates knowledge much better and great results are achieved.
Afterwards, all we have to do is remember those situations so that knowledge flows.