We have decided and I’m now completely sold… but found out I was spelling it wrong. [name_f]Isidora[/name_f] [name_f]Violet[/name_f] Campo! So I love [name_f]Ivy[/name_f] as a nickname but what other nicknames do you see working?
[name_f]Isidora[/name_f]…
[name_u]Izzy[/name_u]
[name_f]Dorrie[/name_f]
But I like your idea of [name_f]Ivy[/name_f] best 
[name_u]Issy[/name_u] ([name_f]May[/name_f] sound a bit hissy or prissy, however.)
[name_f]Ibby[/name_f] ([name_f]Ibby[/name_f] is a more obscure nickname for [name_f]Isabel[/name_f]. It’s a bit of a stretch, but no more than [name_f]Ivy[/name_f], and it could work for [name_f]Isidora[/name_f].)
[name_f]Dora[/name_f]
[name_f]Ivy[/name_f] definitely works! Sorry that I couldn’t be more helpful!
The only option I can think of that hasn’t been mentioned is [name_m]Sid[/name_m]. I like [name_u]Izzy[/name_u] or [name_f]Ivy[/name_f] better though.
[name_f]Ivy[/name_f]'s nice. I’d also suggest:
[name_f]Aura[/name_f] ([name_f]Ora[/name_f], but I prefer the [name_f]Aura[/name_f] spelling)
[name_f]Ida[/name_f]/Idie/[name_f]Edie[/name_f]
[name_f]Adora[/name_f] or [name_f]Sadie[/name_f] might work too (but probably better for [name_f]Isadora[/name_f])
[name_f]Ivy[/name_f] is so cute! Some other ideas include
[name_f]Dora[/name_f](although she may be teased)
[name_u]Isa[/name_u] (pronounced ee-sa)
Sidie/[name_f]Sadie[/name_f]