Baby christening

I grew up in a nondenominational Christian church, and was christened as a baby. I now have a baby of my own, and no longer go to that church, but was still wanting my daughter to be christened in the same church, by the same pastor, wearing my christening dress. I had my dress dry cleaned for her, and I have already scheduled it with the church for a Saturday. I am somewhat stressed because I have no idea what all will go on, then when I told my mother, and father in-law ( who are also religious) they acted as if they didn’t agree with it. They gave me a strange look, and my MIL said “oh really”, my FIL said nothing at all. Then when I mentioned how they acted to my mother, she said that there’s really no reason to get your baby christened anyways, and she only did it to me because my grandmother wanted it. Now I’m questioning if I should even be doing it to begin with...