Why did Cholkar delay his trip to Shirdi, and what personal sacrifice did he make during that time?

According to Chapter 15, after Cholkar's wish to pass his exam was granted, he experienced a delay in fulfilling his vow to visit Shirdi. The reason for this was his financial situation; the text poetically describes the challenge of covering home expenses as a "threshold-ghat" that is very difficult for a worldly man to cross. He had to keep pushing his plans from "today to tomorrow" because he couldn't afford the journey. During this period of waiting, Cholkar made a personal sacrifice by giving up sugar. The text explicitly states that until his vow to Shirdi was fulfilled, he "avoided sugar as an inedible substance, And even drank his tea without sugar."