J.J. Abrams still hasn't finished 'Star Wars: Episode VII - The Force Awakens' three weeks ahead of its release date.

J.J. Abrams

J.J. Abrams

Abrams has admitted he still has "six very small, but important" changes to make to the forthcoming movie before it'll be ready to hit the big screen next month.

Speaking to Stephen Colbert during a Q&A for the Celebrity Nerd Off fundraiser at the Montclair Film Festival in Newark, New Jersey over the weekend, he said: "We were working on the final mixes at 2:30 this morning. I left with six very small, but important things that (still) need to be done because I said, 'I have to get to the Montclair Film Festival.' "

However, the director can't wait to finally declare the highly anticipated film finished as it's been a long time coming.

He explained: "The truth is working on this movie for nearly three years, it has been like living with the greatest roommate in history for too long. It's time for him to get his own place. It's been great and I can't tell you how much I want him to get out into the world and meet other people because we know each other really well. But really, 'Star Wars' is bigger than all of us. So I'm thrilled beyond words (to be involved) and terrified more than I can say."

'Star Wars: Episode VII - The Force Awakens' is set for release worldwide on December 19.