The Great Gatsby is short. Candide is shorter. The Picture of Dorian Gray is fairly short. Each of them might have been read in a day or less. War and Peace is famously long, but at a normal reading pace of 200 words per minute it will only take 40-45 hours -- say, 10 days.
I’m great at reading in cars but trains and planes are ok for me.
>Garfunkel began acting, and played Captain Nately in the Nichols film Catch-22 (1970). Simon was to play the character of Dunbar, but screenwriter Buck Henry felt the film was already crowded with characters and wrote Simon's part out.[83][84] Filming began in January 1969 and lasted about eight months, longer than expected.[85][86] The production endangered the duo's relationship;
Entirely possible since they weren't making music, touring or doing fuckall but wait for their part in the movie. Garfunkel's character doesn't have particularly crazy amounts of screen time either.
I don't know how time consuming it was to be a folk music star, but they weren't expected to workout and train choreography all day, the way pop stars are today.
Despite its reputation War and Peace is actually a pretty easy read. Perhaps except the final essay with Tolstoy philosophy of history.