Not knowing how much longer your growing season is you may or may not want to top it now.....
I would have topped it at leaf/branch #5 or #6 from the bottom when it was younger.....if you have several months to go, you could still top it.
If you're just looking to get a few pods for next yrs seeds, you are on your way.
Species, and time frame would be first info to look into at this stage.