Hi,
If things are going well in an application, Decision Made would be next after medical. Not unless they will require some documents from us. After DM, then that's time that they will asked for the PPR.
As to the question when can we received PPR, that is a hundred dollar question and i guess no one can answer it. It's a case to case basis for each individual and they usually follow a trend (by batches - application received date or etc). If you have been browsing, a few January 2019 applicant and December 2018 applicant received PPR. But it has been awhile since they issued PPR, hopefully there will be flood of PPR request before this year ends (for me included...lol!)
Btw, i am February AR and April AOR (Inland). So let's continue to wait patiently and pray hard.
Cheers!