Hi, Sorry it's taken so long to get back to you. Our Garden Doctor service was down for several weeks for repairs. You don't say where your plant is growing, but honeysuckle vines need full sun (at least 8 hours a day) and some types have a tendency to get hit with mildew during humid periods. These are very forgiving plants, though, so you can trim it back to any height to stimulate new, fresh growth. I would also give it a sprinkling of slow-release granular fertilizer in the spring. If the plant continues to drop leaves you may need to spray the plant with a garden fungicide to keep it looking good. I would trim it back while dormant this winter, feed it in the early spring and make sure it has plenty of good air circulation around it which will help prevent disease. Often, a good trimming will do wonders for an older woody, ailing plant like this.