As a dissertation editor and coach, I have much empathy for beleaguered doctoral graduate students wrestling with their tomes. Many candidates seem to get little support from their chairs in guidance, writing, or cheering on. However, a student recently brought to my attention an impressive exception.
At this university, the doctoral students were advised to maintain associations and seek dissertation feedback from their cohort members with regular group meetings. In addition, this chair, unlike many others, held bimonthly meetings (probably uncompensated) with his struggling dissertation students.