So I've had this java fern for over a year now and it's never put out those little baby plants to make more java ferns. It basically produces a leaf at the same time as one of it's older leaves dies away, a constant maintenance cycle to keep the plant looking great and the same size. It has had 5-6 leaves at all times, bright green and beautiful. But no mini plants. Is there anything I should be doing to make it make more plants?