I did WES for self sometime in December 2017 and for my wife I started the process in Feb 18 and timelines are pretty much similar except her documents are under review still.
I remember in my case, the university had sent just official marksheet copy signed and stamped where as in case of my wife the university prepared transcripts. Any idea dream_canada007 in your case was it the marksheet copy or transcript?
I read somewhere,on the forum may be, that if WES gets transcripts then they possibly ask for semster marksheet copies as well. If that's the case, i think it makes sense to send them copy of marksheets along if you can courier the document set by yourself.
question open to others as well on the forum...