Spelling Question

We just had our second baby, a girl - so this is down the line and IF we have a boy. My husband and I like the name Kaiyzen - we spell it this way because it is how we first saw it.

Had our daughter been a boy we were going to spell it that way.

The more I’m on Reddit the more I’m realizing the Y maybe isn’t actually silent but my husband really likes the Y. I’m also just too attached because for me once I see one spelling everything else just seems wrong (I have been informed this is just a weird OCD/autism quirk).

I’m not asking if you like the name, I’m just wondering how you would spell it if you heard it?