According to Chapter 11, what specific methods did Sai Baba use to help his devotees realize the Nirguna (formless) reality?

Chapter 11 of the Sai Satcharitra describes the practical methods Sai Baba employed to guide his followers from devotion to his physical form towards the realization of the formless (Nirguna). The text states that Baba used countless means, tailored to each devotee's eligibility. For example, he would send one person to another country, confine another to solitude in Shirdi, lock someone in the Wada, or assign them the task of reading scriptures. As Chapter 11 explains, practicing these disciplines for years caused the devotee's longing for the Nirguna to grow, ensuring their mind was always occupied with Baba's essence, even in his physical absence.