What does this text say about how to properly perform a 'Saptah' for a single saint using the works of Dasganu Maharaj?

According to the provided text from Chapter 0, while one can perform a 'Parayan' or 'Saptah' of the works by Shri Dasganu Maharaj, those books are not considered useful for a Saptah focused on a single saint. The reason given is that the biographies within his works, such as 'Shri Bhaktalilamrut' and 'Shri Bhaktisaramrut', are not comprehensive or detailed enough, often spanning only two or three pages. The text implies that a more detailed, poetic Guru biography is needed for such a specific purpose.