Who did Maharaj call 'Kaka', and what significant change did he explain to this person?

Maharaj referred to the author of the text as 'Kaka'. In a personal conversation mentioned in Chapter 0, Maharaj confided in this writer about a major shift in his spiritual practice. Maharaj explained that he used to give medicine to people to heal them but later stopped. He told Kaka, "I used to give medicine to people before. Later, I stopped giving medicine and started saying 'Hari Hari', and while saying Hari Hari, I met Hari." This reveals his transition from physical healing to a path centered on divine name repetition.