Can someone please diagnose this disease of leaves turning brown.

About 60-70% of the leaves have turned light brown and shrunk a bit. See the photos plz. Some leaves are totally fine, especially the fresher/younger leaves. Most probably it is a fungus, but i need an expert opinion and specific details please. It is grown at home. And the fruit will be ready in about 5 weeks. In case Bordeaux mixture is the solution, is it safe at this stage? Fruit is almost ready and in a few weeks it will be completely riped