Q.Can You Stop Banana Plant Leaves Dying Off
Fairly young plant and seems to be growing well and constantly producing new leaves, but existing leaves always die off just as new ones unfold. End up with only 2 leaves on the plant at any one time.

Certified GKH Gardening Expert
It could be a fungal disease, improper nutrients, heavy soil, or overwatering. Also check for aphids or other insects under the leaves. These articles should help:
https://www.gardeningknowhow.com/edible/fruits/banana/feeding-banana-plants.htm
https://www.gardeningknowhow.com/edible/fruits/banana/fusarium-wilt-in-bananas.htm
https://www.gardeningknowhow.com/edible/fruits/banana/banana-pests-and-diseases.htm
https://www.gardeningknowhow.com/edible/fruits/banana/problems-affecting-bananas.htm
https://www.gardeningknowhow.com/edible/fruits/banana/indoor-banana-plant.htm