Based on Chapter 11, what specific methods did Sai Baba employ to help his devotees transition from attachment to his physical form towards an understanding of the formless (Nirguna)?

Chapter 11 describes several methods Sai Baba used to guide devotees toward realizing the Nirguna, or formless, reality. To accomplish this, Baba would employ countless means according to the devotee's eligibility. These methods included sending a devotee to another country, confining another to solitude in Shirdi, locking someone in the Wada, or assigning them the task of reading scriptures. The purpose of these practices, which could last for years, was to cultivate a deep longing for the eternal, unmanifest aspect of Baba, so that the devotee's mind would be occupied with his essence whether they were sitting, sleeping, or eating.