Why are the leaves curling?
Check the newest leaves and their undersides before you change the care routine.

What to check first
Look inside the curl for insects, fine webbing or sticky residue. If there are no pest signs, feel the mix and think about recent changes such as direct heat, cold drafts or stronger light.
What to do now
If you find pests, separate the plant and match the response to the pest. If you find a dry or waterlogged pot or a harsh draft, correct that first. Avoid spraying for curl alone.
What to watch next
Check how the next leaves open. Old curled leaves may stay that way. New distortion despite stable conditions calls for another check for pests or root trouble.