Who was responsible for continuing the daily worship of Sai's photograph when the son went to Shirdi?

Babasaheb Tarkhad, the son's father, was the one responsible for continuing the daily worship. As detailed in Chapter 9, the son was initially hesitant to leave for Shirdi because he worried about who would perform the regular worship and Naivedya offering at home. He only agreed to the journey after his father, Babasaheb, gave him a firm assurance, promising to offer Naivedya to Sai's photograph daily before anyone in the household consumed their food. Upon the son's departure, the father began performing the worship himself each day.