Q.Lemon tree in container
I have a lemon tree that I purchase from a nursery 1 year ago. I live on Long Island, N.Y. I planted it in the container and it has grown beautifully all this time. I have 12 lemons on my tree. They began at the end of the summer and have grown all winter long and are still green. I kind of suspect perhaps it is a lime tree! Now, as well as that mystery to me is, about a month ago the leaves started dropping. Healthy green leaves dropping to the floor. Every day and they are almost gone. Still, the beautiful, shiny, green lemons hang there. I have been careful with the watering and feedings. I increased the watering a bit when the leaves started dropping as spring was approaching and it needed more. The soil is well draining. It sits in a beautiful sunny window. I am waiting for Memorial Day to bring it outside for the summer in waiting for the right nighttime temps.
How long does the fruit take to turn yellow?
Is my tree shedding in preparation for the new season?
I thank you in advance.
Sheila Laform

It is normal for some leaves to drop, but it can also be caused by uneven watering, pests and disease.
These links will help you pinpoint the issue and correct.
https://www.gardeningknowhow.com/edible/fruits/lemons/lemon-tree-leaf-drop.htm
https://www.gardeningknowhow.com/edible/fruits/lemons/growing-lemon-trees-containers.htm
https://www.gardeningknowhow.com/edible/fruits/citrus/growing-citrus-trees-indoors.htm