I’ve seen here many people asking about how to change Facebook page name.
It will take few weeks until you get to the desired name.
Let’s say you have page with name “Good Night” and you want the name “Good Morning”.
Only once per week you will remove one word or add one word.
You must remove word only at the end of name… and you must add word only in front of name.
week 1: Morning Good Night
week 2: Morning Good
week 3: Good Morning Good
week 4: Good Morning
I did this with lots of pages and it was working always.
I hope it helps!