When did formal worship begin at the Chavadi, and what was Baba's established routine regarding his nights there?

According to the details provided in Chapter 37, the formal worship, bhajan, and adoration of Sai at the Chavadi commenced from December 10th, 1910. Prior to and after this date, Sai Baba followed a consistent and unwavering routine concerning his sleeping arrangements. He would sleep at the Chavadi every other day, by rule. This meant he would spend one night in the Masjid, and the subsequent night would be spent at the Chavadi. This alternating sequence was maintained continuously right up until the time of His Samadhi.