My advisor has become increasingly toxic since the beginning of the pandemic. He makes belittling comments about my competence over small things like typos, shuts down my ideas as "bullshit" (and sometimes comes up with the same ideas "himself" a day later). Frequently skips our scheduled meetings, yet refuses to give comments/feedback on manuscript drafts unless we go through them together. He has been blaming the lack of productivity on my unwillingness to work weekends/late evenings (while he never comes in to work before noon) or on not being "proactive" and competent enough.
Some of my friends have encouraged me to go to the department. Our department seems to have an ok culture, and I feel like if I were to go to the grad chair with my concerns and incidents that I have documented, the department would want to help. However, I am close to graduating, so do not want to switch advisors, so I am not sure the department can do more than give him a mild slap on the hand and tell him to be a better advisor. I'm also terrified of him finding out this way that one of the students has complained about him, I can imagine things getting much worse for us after that. But I wanted to post this in case I'm missing something and there are ways for the department to help us out? My goals would be for my advisor to have more reasonable turnaround times so that I can publish my work faster and graduate and get out, or for the department to allow me to graduate without completing all of the projects in my proposal.