Nice to see you back posting, yellow_fleurs! It sounds like you've got some good things in the works and made great progress with therapy.

I remember the third interview I had for my last job. Though yours may be a continuation of the standard, sometimes it is more a "getting to know you as a person" type deal. I found that in my case, it was good to just relax as much as possible. Maybe even talk about something lighter than expected.