I don't think that there is a way to check online. All you can do is call the Mileage Plus service center and get an update on the request.
I am also waiting on some miles from Turkish Airlines to post from November and beginning of December that would have brought me past the 1K level.

I did some last minute flying on Christmas Day and technically I would have been 1K then but only Platinum status applied in regards to CPU and mileage bonus. I wonder if my Flight delay coming back would have been handled different if I would have had the new status.