I don't remember what I fed my chocobo last night (I know it was just one fruit again though,) and now I have Deepwood Green. I have no idea where I am really, so I just followed the calc's instructions of 1x Valfruit again just to see where it gets me. I feel like I'm just getting knocked around by RNG and overshooting Soot Black every time.

For what it's worth, here's a pastebin of the feedings I've been keeping track of (though unfortunately, I didn't record what I fed last night when it was at Ink Blue.)

Thanks for your help...