TS out of scope... can I be granted a Secret?

I’m new to the site, so here is my situation. I have an DoD secret approved in 2013. I had a DHS SSBI approved for TS in August 2015. The SSBI was for a internship. Now I have a TO for the Department of Interior LE position. They said my previous investigations were to old. The position required a T3 Secret investigation. They initiated the new T3. How long should I expect? Could I get a temporary security clearance?