I don't have personal experience with SH. But I've read books about it. It sounds to me like he's using the standard psych playbook, as in not reacting. It sounds painful for you that he did not respond in what you felt was a caring way. I'm so sorry you are suffering with this.

What concerns me is that your SH is getting worse as you said. As others posted maybe you could devote some time to thinking what is your definition of "help" Do you want to go to the hospital? Do you need to be on meds or different meds. Do you want an emotional response from your T? Do you need more sessions? A different T?

I know it's difficult when drowning in a quagmire of depression to be able to think straight. But try to be your own advocate and speak up for what you want and need. You may not get it, but at least you tried.