Q.Leaf curl on lemon tree
I have a lemon tree in a pot (recently potted) and the leaves are curling backwards. Could this be due to our very close proximity to the beach or the amount of wind we get here?

Curling leaves on lemon can indeed be caused by stress. I don't know how close you are to the shore, but if you put your lemon tree so that the house is protecting it from salt wind, that is the most you can do. This article will give you some more ideas on leaf curl: https://www.gardeningknowhow.com/edible/fruits/citrus/curling-citrus-leaves.htm
Also some tips for potted lemon trees: https://www.gardeningknowhow.com/edible/fruits/lemons/growing-lemon-trees-containers.htm