Like nr23, I got program specific invitations for Northwestern, Baylor and UF...although I didn't apply to UF through ERAS (and yes, it's Gainesville)...I think these are just part of the application process, not an indication of an interview invitation.
Can also confirm the program specific questions are a 1 week deadline from completing the common video questions.
Chill about the questions - they're things you could already anticipate / ideally answer like why would you be interested in their program (just spend a few minutes looking into them or if you have friends that go there, talk to them)