Chunk the work
Break long scenes into sections with a clear endpoint. Repeating a five-page scene from the top every time usually overtrains page one and undertrains page four.
Recognition Is Not Memorization
Many actors feel secure because the line looks familiar on the page. That is recognition, not recall. Real memorization starts when the cue arrives and the line comes back without visual support. A rehearsal system that can hide your line while keeping the cue available is useful because it forces recall instead of passive recognition.
One reason cue-based tools help is that they preserve cause and effect. You do not simply recite text in isolation. You answer a prompt. That better resembles actual scene use, where your line lives inside timing, relationship, and pressure.
Line Memory Method That Works Better Than Endless Full Runs
Use cues, not only first words
Memorizing the first word of your line is fragile. Memorizing the cue before it is stronger because it ties recall to what another character just said or did.
Alternate visible and hidden runs
Read one pass for rhythm, then hide your lines for the next pass. That quickly reveals whether the text has actually settled.
Return to weak lines directly
Use line jumps for the specific lines that collapse under pressure. Efficient memory work is targeted, not merely repetitive.