Spaced repetition is the best way to remember things

Space rehearsal and exposure over a long period.
Learn a bit each day rather than in one bulk effort
expose yourself to the concepts learned repeatedly, with the spaces between increasing over time.
Studying something twice is almost always better than once. review for a few minutes end of day is a head start
"deliberate non-practicing between bouts of deliberate practice"

The Science of Rapid Skill Acquisition: Advanced Methods to Learn, Remember, and Master New Skills, Information, and Abilities - Peter Hollins
Range - Why Generalists Triumph in a Specialized World - David Epstein

"When you focus on frequency of learning versus duration or even intensity, you will learn better. Focusing on duration usually becomes motion for motion's sake, adn can oftentimes become detrimental overall to your goals."
It is what it sounds like—leaving time between practice sessions for the same material. You might call it deliberate not-practicing between bouts of deliberate practice. “There’s a limit to how long you should wait,” Kornell told me, “but it’s longer than people think. It could be anything, studying foreign language vocabulary or learning how to fly a plane, the harder it is, the more you learn.