Besides the incident with the khaja, was there another time Sai Baba revealed he knew Laxmichand's private thoughts?

Yes, there was another significant event where Sai Baba showed he was aware of Laxmichand's unspoken thoughts. According to Chapter 28, during a Chavadi procession, Laxmichand saw that Baba had developed a cough. A thought arose in Laxmichand's mind that perhaps the cough was caused by someone's 'evil eye.' This was merely a private mental thought. However, the very next morning when he came to the masjid, Laxmichand was astonished to hear Baba say to Madhavrao, 'Yesterday I had much coughing; is this the effect of an evil eye?' This direct echo of his private thought left Laxmichand wondering how Baba knew, concluding that Baba truly dwells in everyone's heart.