I have a Honeysuckle vine that has been on my fence since I moved to my new home its very established and I love the placement. Problem is I don't know how to maintain it....the bottom is stickly and dead looking but the top is green and healthy. It's tangled beyond help onto the fence I'm sure its beyond light pruning. Would it be ok if I cut it back tremendously in the fall? How much can I cut without killing it? I want to come back nice and bushy to keep the privacy in my garden area.