Any Ideas on How to Make Hair Grow Back Faster?

I know this is kind of an odd question, but I chopped off a good 6 inches of my hair back in November...and continued to maintain it until Febuary. Since then I've been growing it out, and have trimmed it just once in the past couple of months. Now I want to have it back to my original length, give or take and inch or two. What would be the best way to achieve this?