Name help please for little girl!

My boyfriend and I have struggled with finding a name for our little girl that we both agree on. We love Eva, but he is insistent that she have a “full name” and has been calling her Evalyn (pronounced like ev-ah-lyn). I am not personally a fan of Evalyn / Evelyn and am trying to think of other options to change his mind. We have a tiny bit of time, but he’s been calling her Evalyn for a couple months now and our families already call her Eva and Evie.

Do I give up at this point? It just doesn’t sit right with me...