BJay- it looks a gorgeous plant. Book says prune after flowering,
typical, but doesnt say whether it flowers on old or new wood.
Flowering can be up to/including March apparently, so I'd leave any tidy up until then.
If it flowers on old wood, did you prune it last yr, to 'tidy' up & thus remove the chance of any flowers this yr?
I'd certainly feed it after any pruning too. J.