it is better to study for short periods of time regularly
it is easier to remember information if you study little and often rather than for long periods of time
「短い時間の練習をたくさんやった方がいい」= it's better to study little and often / it is better to study for short periods of time regularly
「長時間の練習よりも、短い時間の練習をたくさんやった方が記憶が定着しやすい」= it is easier to remember information if you study little and often rather than for long periods of time / instead of studying for long periods of time, studying little and often helps information stick in your memory
「little and often」という表現はとても役に立ちます。「短い時間の~をたくさんやる」という意味になります。