Can you describe the specific schedule and opportunities Amir Shakkar had for Baba's darshan while he was confined to the Chavadi?

Yes, Amir Shakkar had several specific, recurring opportunities for Baba's darshan. According to Chapter 22, he received vision every morning and evening, plus additional times every other day. First, he would get an easy vision daily as Baba passed the Chavadi while going for and returning from His morning alms round. Second, every evening, Baba would come in front of the Chavadi, salute the directions, and then proceed to the Masjid. Finally, on the nights Baba slept in the Chavadi (every alternate day), there was only a nominal curtain and a plank door separating them. After the Aarti and the departure of other devotees, they would have the opportunity to talk with calm minds.