How long do you want to put up with this for? She will carry on treating you this way because you let her. It’s a toxic relationship

You need to think about what this relationship was giving you. I’ve just come out of a similar situation. It’s taken me 5 years. I lost the ability to make my own decisions, my own freedom, my personality, I felt unloved and not respected. Now I feel like a new woman

I agree see what the university provides for support. Maybe seek a local support group. Keep self busy and around people. Exercise can be helpful

What have you tried service or treatment wise?

Have you had a gp review or therapy? Have you tried a support group face to face.

I feel a gp review would be good. Try and find a hobby you enjoy to make time out of work more enjoyable. Work may be more tolerable.

Gp review needed and a new psychiatrist best wishes

I’m sorry you are having this experience. It sounds you like a proper review. Stopping and starting meds will really mess with your body and mind.

Have you been assessed or had mental health reviewed recently?

I know local to me there are introvert social groups that do things together like bowling or cinema etc. They might be good for you to meet people who also suffer from mental health issues.