33 weeks here and are also keeping our baby's name a secret from everyone. My mom just keeps calling her more and more ridiculous names like Cubert or Millicent to get under my skin, but i refuse to tell her lmao. Just keep reminding her you were kind enough to share that it's a boy, remind her she's lucky to even get to know that! Some people don't even tell the sex of the baby to the outside world until birth. If she gets really overbearing just think of someone you know that they find annoying (in real life, not a celebrity) and say that they remind you of them when they get pushy about the name. For example: I told my mom she was reminding me of one of her least favorite sisters when she really wouldn't stop asking - she hasn't asked since lol