My son-in-law, in his quest to clean up the fence line, chopped away half of my Gardenia bush with a machete. The back half. This was a large bush, about 6 ft high and about the same around. We've use pruning shears on the jagged cuts where we could find them. Some of the branches in the front have been sliced downward. Should we cut back the sliced ones? And will it survive? Every day that goes by I see more and more yellow leaves. What can we do to help it through the upcoming winter months? We live in southwest Florida. Any help would be appreciated.