The Death of Ivan Ilyich is a short novella, about 68 pages, and it can be read in two weeks at about five pages a day, or in one sitting on an afternoon.
It has twelve chapters, without parts, and they shrink as the book goes on, like the sick man's time. The first four take up a little more than half of the pages; the last four chapters are the shortest, with few pages each, and the last has fewer than three.
A two-week schedule works like this: in the first week, chapters I to IV (the wake, the life, and the illness that begins), about 36 pages, one chapter every one or two days; in the second week, chapters V to XII, about 32 pages, from the night of the discovery to the light. Each day comes to around five pages, and the pace follows the novella, which accelerates toward the end.
Those who prefer to read it at once can begin with chapter I, the longest, and continue without stopping through II and III, which are the biography. Those who read in parts gain time to feel the change of rhythm between the long life of the first chapters and the short death at the end.