Buddleia buzz pruning
This is a current picture of my magenta buddleia buzz. I know it flowers on new growth and I would like to keep it not too much larger than it is now by the time it flowers. How much would you prune it back by? I'm worried if I take it too far back I'll loose the 'bushiness'. Is the right time to prune it now? Worth giving it a feed yet?
Thanks in advance (North East Wales)