It's not realistic in our everyday lives but fiction frees you of this limitation. There are things that happen in John Grisham's novels that couldn't possibly take place in the world we live in. The same is true for any novelist who writes about the law I know of. Stick to your time frame if it's too much trouble to change it; most readers won't know the difference.
I've defended more than a dozen people charged with 1st degree murder and the quickest I've ever got a case to trial is 12 months. In some counties it can take 3 years.
If you're looking for some ideas, I think that adding a handsome Asian lawyer would be an excellent place to start ;) Good luck with your novel!