I'm thinking about fasting to feel closer to God. What would Sai Baba's advice be?

Based on the teachings described in Chapter 32, Sai Baba would strongly advise against your plan to fast. He firmly believed that God is not attained on an empty stomach because a fasting person's mind is not peaceful, which undermines any spiritual goal. He would tell you that to find God, one should first eat a piece of bread, as without food, the soul cannot find peace. The text clearly states, "God being found in a hungry stomach - this doesn't happen even in imagination." His guidance was to nourish the body to strengthen the senses for devotion.