I live in Thailand where there is plenty of sunshine. Two years ago I planted a small fig plant in my garden. For a while the plant grew well with health green leaves and had some figs as well. But then, the leaves started turning brownish and fell off. For the past one year, the plant has about five sticks and no leaves. There are a couple of buds on the plant but never grow further and produce leaves. How can I improve the growth? Thank you.