So, I'm in a similar situation. Our daughter just turned 7 weeks old. I started transitioning halfway through the pregnancy though, so she's only ever seen me as me. I don't wear wigs and I use only a little makeup, so my appearance doesn't change that much day to day.
I go full-time at the first of the year and that will be that. With a name change in the works, the gender marker will be soon to follow. Once it's official like that, then I'll have legit ground for having our daughter call me whatever we can agree on, and all before she starts talking probably.
Right now? We're going with Baba (bah bah, like a sheep). It's like Dada and Mama, but my wife doesn't feel like I'm usurping her name options, and I don't feel like it's overly masculine.
Eventually, I'm hoping to go by Mommy-K when she's old enough to reason through it. My wife would then be Mommy-J, mom, mommy, mama, everything else. I just want that shred if she can part with it. Eventually, I'm presuming our daughter will only ever know me as the woman I am, so hopefully she'll be comfortable using any of those terms with me as well.
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