I have face to face sessions with my T, but I still relate to what you are saying.

At the end of my last session he asked how I was feeling, I felt like I was going to break down and told him how awful leaving his room is...that he's all I have now the rest of my life is gone, I don't see anyone else but him all week. I can't make plans, there's no events on, we are in lockdown at the moment so now can't see family or friends again as they live too far.

I agree the feeling is here to stay for a while. You definitely aren't alone with this feeling.