Any idea on how I can optimize this ?

Hi !
So I’m editing the level blueprint and I recetly added the system of day/night and on night I turn on some lights. Actually I have 7 lights but in a future there would be a lot more so it would be hard to read.
As you can see on the picture it’s already heavy to read and not really optimized.
Do you have any idea on how can I change this so it will be readable ?