What specific methods did Sai Baba use to guide his devotees toward realizing the 'Nirguna' or formless reality, according to Chapter 11?

According to Chapter 11, Sai Baba employed a variety of unique methods to help his devotees realize the Nirguna, tailoring them to each person's eligibility. The chapter provides specific examples of his techniques. These included sending one devotee to another country, confining another to solitude within Shirdi, locking a person in the Wada (lodging), or assigning them the dedicated task of reading scriptures. The text explains that by engaging in these practices for years, the devotee's longing for the formless would grow, and their mind would remain constantly occupied with Baba’s company, transcending his physical presence.