Hello!
I’m looking for nickname inspiration for [name_f]Anais[/name_f]. I would like the nn to be intuitive. Is “[name_f]Anna[/name_f]” useable or does it look unnatural to add an N?
I think [name_f]Anna[/name_f] works. You could always spell it [name_f]Ana[/name_f].
Others:
[name_f]Ani[/name_f]
Nais
Isy
[name_f]Anna[/name_f] works as a nickname, I think! I know an [name_f]Anastasia[/name_f] who goes by [name_f]Ana[/name_f] (pronounced [name_f]Anna[/name_f]), if you want to spell it that way instead.
I would also suggest [name_u]Isa[/name_u] (EE-suh). Good luck 
[name_f]Anais[/name_f] nn [name_f]Anna[/name_f] works, although personally I prefer [name_f]Anais[/name_f] nn [name_f]Ana[/name_f], but that’s very minor.
[name_f]Anna[/name_f] is great, and [name_f]Anne[/name_f], and anything else you like. I don’t believe in rules about nicknames!