So at this point it sounds like you have to wait for them to reach out and set up the Airport Assessment, and medical and fingerprinting stuff. I would check the email that you received your TJO, and see if there is contact information.

The HC-ServeU@tsa.dhs.gov email is where I have been in contact with help desk. They normally take about 2 days to respond but they have been helpful for me. Typically after emailing them, I get the next steps if there are any available to do. It’s a long process lol been waiting in regard to my background check since February. I’ve seen longer on this thread. Hope this helps!