So update on my situation.
I messaged the artist five days ago. No response. I've looked at their DA and they've posted several pieces they've done in the time since I've ordered my art. Most recent having been posted last week. They don't have any journals up talking about any absences and they have been on at least two days ago. I'm debating on noting them on DA because at this point it feels like I'd be more likely to reach them.
While they are not submitting art daily, they've posted several pieces that are equal to or greater than my com in complexity. Several of which being other commissions. You'd think that I'd've gotten some sort of update on my art. Maybe I'm just kinda salty. I've at least messaged someone who has ordered art from them to ask if the wait time is normally this long. Because I'm at my wit's end.
Turns out they had not in fact given me a completion date, I was just misremembering. But they did tell me that they were going to push the art back.
I'm gathering screenshots for this in case I need to make any sort of warning on them.
Edit: They finally responded with za WIP. I was less than impressed with the quality and progress and asked to cancel.