Can you explain the relationship between meditating on Sai's physical form (Saguna) and understanding the formless Self, as described in Chapter 52?

Chapter 52 describes a spiritual progression from the form to the formless. It states that the Parabrahma, which is without attributes, is entirely difficult to understand directly. Therefore, meditating immensely on Sai's physical form (Saguna) is presented as the necessary first step. The text explains that without entering the Saguna form, the light of the Self cannot be known. As a devotee deepens their meditation, the Saguna form eventually vanishes from the mind, and the subtle nature of the true Self is revealed. This process shows how Sai leads devotees mysteriously toward the supreme goal, as highlighted in Chapter 52.