Could you describe Sai Baba's shift from providing medical remedies to his later spiritual practices?

Sai Baba's method of helping people underwent a significant evolution. Initially, he was known for giving out medicine free of charge. However, he later transitioned to a purely spiritual approach. As documented in Chapter 0, Maharaj himself explained this change to the author, stating, "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 powerful statement from Chapter 0 indicates a deliberate shift from physical healing to the spiritual practice of chanting God's name, which culminated in him giving only Udi (ash) as a blessing.