Kayjay it's good you are still here and reading but you don't seem to have really taken on board the other points made.
if you inflict a piercing on your DD at even a year, how do you know she would want holes in her ears? it is not compulsory! I got to 24 without having pierced ears.
Have you not taken anything on board about how earrings are dangerous because ear lobes can be ripped, banned at school except for studs, and they are just another thing for you to worry about when there will be far more important things.
What i find scary is your first post about the "right age".
You seemed to be suggesting that as your DD was 5 weeks prem, having her ears done now at 5 weeks old was akin to having them pierced as a new born baby. No?
It doesn't matter when they are done. At any age you have to accept
a) it will hurt
b) it's not reversible ( unless you allow the holes to close up)
c) it is time consuming to bathe the ears and make sure they don't get infected.
d) children are prone to tearing their ear lobes in sport of play if they wear earrings.
Your DD is not a toy to dress up. She is a human being and should be allowed to make these choices as an adult- or a near adult. Not a 5 year old, or whatever else you meant by " in a few years time".
FGS grow up and start acting like a responsible mother. Not a child with a new doll.