Been playing this for the last few days, and I really really enjoy it so far! It's obviously still pretty barebones in its current state, but compared to a lot of other weight gain games I've played over the years, this one just feels very pleasant to play. I really like the art, and overall design of everything as is, I just wish there was a bit more to it. Moments like stumbling into the grocery store drunk and coaxing Jenny into letting you play a drunken version of the minigame are a lot of fun, and I hope the finished game has more like that.
I will say that I agree with a few other commenters about the IRL time aspects not really adding much at this point. I trust that you have grander ideas for this mechanic, but as it stands it's basically a roadblock that limits your ability to make any real progress with Emma and Jenny, and it's kind of at odds with the fact that your character can sleep off a massive feeding session instantly.
I also had a question about the mod tools. I'll admit, I'm not entirely sure how to actually use any of the custom personalities and dialogue. I might just be missing an explanation though.
Regardless, I really hope you continue developing this, because I think you've got something really special here. I'm excited for the future updates, because from the sounds of things almost every minor issue I have is planned to get resolved at some point.