Three lives, no timer
Survival Mode gives you three lives and no clock. Each incorrect entry costs one life and the run ends when they are gone, so how long you last depends entirely on how consistently you key — not on how fast.
Managing the margin
Three lives changes the psychology compared with the single-life Accuracy Attack. You have room to recover from one slip, which means the useful strategy is to keep a steady pace rather than freezing after a mistake. Losing the second and third life immediately after the first is the most common way runs end early.
If you lose a life, finish the next entry deliberately slowly before returning to pace. Resetting your rhythm on purpose is faster than trying to fight through the wobble.