Morning, just a quick question. In 2020 I bought a lovely Polish Spirit Clematis and unfortunately my dogs pee pretty much destroyed it. I potted it over winter and planted it back out last spring, it did actually throw out one stem, very thin but it reached the top of my fence and flowered late. My question is this, it now has some lovely, healthy and strong looking new shoots but at the top. Do I prune?? It still appears so weak and I don't want to risk killing it now!