My child isn’t Phoebe but has an equally not phonetically spelled name and it’s never been an issue.
As a Phoebe I never had a problem leaning to write my name and I’m dyslectic, other people sometimes write is pheobe but that’s the only problem iv ever had with spelling and not from myself 😂🥰 hope this helps xx
My dad's cat is phoebe, and I usually have to stop and think which comes first o or e. Lol, but I LOVE that name
My niece is Phoebe, she’s 6 and has been able to spell her name since she was 3 1/2, I’m sure you’ll be fine
My neighbour called her daughter Phoebe my 5 year old can spell it. You might be over thinking it x