My lime tree does not flower or bear fruit - Why?
My Lime Tree Does Not Flower or Bear Fruit – Why
Certified GKH Gardening Expert
I would also try giving it some phosphorus rich fertilizer, like bone meal. If it is lacking phosphorus, it will not be able to produce blossoms (which means no fruit.)
If you have not read it yet, this article may also be helpful: https://www.gardeningknowhow.com/edible/fruits/lime/reasons-and-fixes-for-lime-tree-not-producing-blossoms-or-fruit.htm