There is a phone number you can call from the TN D.o.S. website.
The ladies that take care of it are SUPER friendly. They'll let you know your status, and possibly when it ships. Sometimes, a phone call is all it takes to move it from the "Approved" folder to the "In the Mail" folder.
For government employees that process TONS of paperwork, PLUS answer the phone calls of impatient people, they do a fantastic job of representing the DoS in a polite, friendly, and efficient way. The world would be a better place if gummint agencies operated like they do.