Based on my experiences, Guruji appearing in dreams is not as rare as one may think. Even though he left his body in 2015, he's very much active.
He appeared to me in a dream a few years back, an event which spearheaded my path in Sri Vidya.
There was a gentleman in my residential beginner's course who came to study after Guruji appeared in his dream.
Very recently, there was another gentleman at Devipuram who received Guruji's darshan in a dream along with a mantra diksha followed by some instructions.
