Why was there a delay in Cholkar fulfilling his vow, and what personal sacrifice did he undertake during this period?

After Cholkar successfully passed his exam with Baba's grace, he was unable to immediately travel to Shirdi to fulfill his vow. Chapter 15 suggests this delay was due to financial hardship, referring to the difficulty a worldly man has in crossing the "threshold-ghat" of home expenses. To honor his unfulfilled promise, Cholkar made a significant personal sacrifice: he completely gave up sugar. The text explicitly states he avoided sugar as an inedible substance and even drank his tea without it until he could finally make the journey and present his offering to Baba.