Why couldn't Cholkar immediately fulfill his vow, and what personal sacrifice did he make during this time?

According to the account in Chapter 15, after Cholkar successfully passed his examination, he was unable to immediately travel to Shirdi to fulfill his vow due to financial hardship. The text describes this struggle poetically, stating that crossing the "threshold-ghat" of home expenses is a great difficulty for a worldly man. During this period of delay, Cholkar demonstrated his continued devotion by making a personal sacrifice. He completely gave up sugar, treating it as an "inedible substance" and even going so far as to drink his tea without it. This personal penance lasted until he finally had the financial means to make the journey to Shirdi and complete his promised offering.