Choosing a bridal party- stressed out!

So about a year ago I was having coffee with one of my closest girlfriends, neither of us were engaged at that point but we were both in serious relationships and are now both engaged. At the time she had shared with me that I would be her MOH. I had told her I had been thinking the same, in making her my MOH.


Flash forward to now, and I am wishing I hadn’t have said this so quickly. She’s a great friend, but my other best friend just fits the role. I have yet to officially “announce” bridal party because I don’t want to cause any drama or hurt any feelings. As of our last phone call that original friend had still mentioned me as her MOH (but has yet to make it “official” with anyone). I said I was still finalizing my party.
The reasoning behind the change of mind is that this friend isn’t a great communicator, when we are together we are as close as could be, and I could tell her anything but it’s making plans and reaching out that seem to be hard for her. She will definitely be a bridesmaid, but MOH doesn’t seem to fit. I’m just afraid where I had already mentioned it last year, and where she is planning to make me hers that I would hurt her feelings
My other best friend who I am leaning towards MOH is the type of friend who always goes out of her way to make me feel special, not because I expect it or require I but just because of who she is. Her and another friend of ours organized and planned a surprise engagement party for my fiancé and I, she never misses celebrating with me for anything, etc. Our friendship hasn’t been perfect of course, but I’ve never questioned her devotion.
anyway, would it be a completely bridezilla thing for me to “change” my MOH even though it was never official anyway? Or do I just make my original friend MOH to save hard feelings?