Question on "Awaiting Production Checklist" Status for Manuscript
You need to find out the journal's policies on "Online First" vs. paper issue publication.  The reason is because the date that a paper is accepted may be very different than the date when it is formally published, if the journal is still tightly tied to paper issues and has a long publication queue.

If the journal does online publication in advance of its paper issues, then you should be expecting production to begin shortly and a citable preprint of your paper to become available very quickly (though the final official publication date might be many months in the future).  

If, on the other hand, the journal schedules its publication based on print only, and does not publish early online, then it might stay in this status for a long time, as the publication staff may not have any reason to work on the article until it is approaching the final publication date.