I have a couple of Petite Pink Bee Balm's that quit flowering already, about a week or so ago. What I need to know is do I cut the flower heads off, or are they finished for the year?
Yes, but I would like some seeds, if it's finished flowering for the year.
You'll probably have more success digging it up and separating it into clumps, then replanting. I'd cut off the heads. The plant uses a lot of energy to make seed heads, which is one reason why we deadhead plants.