I have a lime tree which is over 4 or 5 years old and it is the same size as when I bought it. The tree gets a few more leaves every year in the winter and then it starts losing the leaves in the spring. I do fertilize and have put nitrogen and potassiun but nothing changes.
Certified GKH Gardening Expert
This article will help you: https://www.gardeningknowhow.com/edible/fruits/lime/lime-tree-leaf-drop-why-a-lime-tree-is-losing-leaves.htm