The name might grow on him, you never know! My OH was deadset on one particular name but after me listing off hundreds of names he decided he could consider others lol. I personally think Finley & Felix sound adorable together.
Now, my OH comes from a family of M's. Mint III (dad), Michelle (mom), Mint J (OH), Mitchell (brother), and Martin (brother). Their dog's name is Mia too, though I think that's coincidental. Then his mom's family is Mitch, Marcus, Matt, and Maria. Looks weird written down, but no one has ever mentioned it to them before me lol. They all don't mind it.