Hi! I did my interview last Friday, January 12th and got my passport back yesterday, January 18th. The turnaround time can be a lot quicker, I think the long estimate they give you is to manage expectations.
They will let you know once it has been printed and when the courier has it for delivery so it will not be a surprise when it arrives. You can also check the CEAC status check page for updates on when it has been printed/issued.
Congrats!!