A month of lessons could be valuable if it gives you some clear direction and motivation for woodshedding. I would ask the instructor to evaluate your playing, tell him where you'd like to go, and together develop a practice schedule. Also he can point you to some books, videos, websites, and other resources. That way you've got material to work on for months after the lessons have ended, and hopefully the lessons will charge you up to really drive you to practice.
I once saw a forklift lift a crate of forks, and it was way to literal for me.