Normally charting for early morning trains will be by previous evening. Hence I guess, charting for this train will be done by May 16, 20:30.
From my experience, its really tough this pnr to get confirmed.
I got a ticket from chennai to pune on May 13, with status PQWL 1,2,3 and 4 (2A) and it did not confirmed. I traveled by bus from chennai to pune.