What was Sai Baba's routine for sleeping at the Chavadi, and when did this practice begin?

According to the account in Chapter 37, Sai Baba followed a consistent, alternating routine for his rest. He would sleep one night in the Masjid and the very next night at the Chavadi. This sequence continued uninterrupted until his Mahasamadhi. The text specifies that this particular custom of worship, bhajan, and adoration as part of the Chavadi procession was formally established and began on December 10th, 1910. On the designated Chavadi nights, the celebration would commence with a bhajan group gathering at the Masjid to sing praises.