What specific project was Das Ganu working on, and why did it lead him to seek Sai Baba's help?

Chapter 20 explains that Das Ganu was working on a commentary on the Ishavasya Upanishad, titled "Ishavasya-Bhavartha-Bodhini." His goal was to make the scripture's profound meanings accessible to people who were ignorant of the Sanskrit language by translating it and explaining it in simple Prakrit Ovi verses. However, he encountered a major obstacle. As he worked, he realized that a direct, word-for-word translation failed to capture the deep internal secret and meaning of the Upanishad, which left his mind without joy or satisfaction. This intellectual and spiritual doubt prompted him to travel to Shirdi to seek guidance from his Satguru, Sai Baba.