Choose a short clip you are allowed to access, preferably one with clear speech and reliable subtitles. Start with a manageable segment rather than an entire film. Listen without subtitles and write the main idea in a few words.
Then turn on the subtitles to inspect the part you missed. Your difficulty might be an unfamiliar word, a familiar word pronounced differently from your expectation, or speech that moves too quickly to separate.
Connect the written phrase to its sound
Suppose you understand the subtitle "Could you send it again?" but did not recognize it in speech. Replay that small section while following the words, then listen again without the text. The purpose is to connect the sound with the phrase, not merely to prove you can read the sentence.
Automatic subtitles can contain errors, especially with names, accents, and background noise. If a line makes little sense, check the surrounding context or choose more dependable material instead of memorizing a doubtful transcription.
End by summarizing the segment without looking. Keep only one or two useful expressions for later practice. If you spend the whole session pausing every second, shorten the material or choose easier speech. A staged subtitle routine is useful when it changes what you can hear on the next listen, rather than leaving every viewing dependent on reading.