What specific methods did Sai Baba use to help his devotees realize the Nirguna, as detailed in Chapter 11?

According to the details provided in Chapter 11, Sai Baba employed countless means to help his devotees realize the formless (Nirguna), tailoring his methods to their individual eligibility. The chapter lists several examples of his techniques. He would sometimes keep devotees at a distance or even forbid them from seeing him for long periods. In other cases, he would send a devotee to another country, confine another to solitude within Shirdi, lock one in the Wada (lodging), or assign them the specific task of reading scriptures. The text suggests that by practicing these disciplines for years, the devotee's longing for the Nirguna would grow stronger.