Something that we learn in this process from consciousness to awareness is to see what kind of definitions or judgments we have placed onto our names/last names and so be able to write it out, self forgive it and let it go.
To understand more I also suggest checking out this audio at eqafe where this point is explained in all its dimensions/aspects
What's in a Name? - Quantum Systemization - Part 133
So, my suggestion is to consider that there is a way to walk through it because even if you decide to change your name to the middle one or whichever, you will still have the other names as part of your identity, so here also a realization that we cannot change some things 'out there' but we sure can change our own reactions, judgments, prejudices about our names or any other aspect of ourselves.
You can check out the audio and then also share what you've realized from it and let's keep this discussion going
Thanks for opening up!