I know your post was directed to other forum member but I wanted to say that you have nothing to worry about! My application had literally zero movement until August 15th when ECAS it changed to "In Process". And CIC did not make any contact with me until today, when they requested the RPRF, I am still waiting for PPR who knows for how long... And I am an early May applicant, a month earlier than you!
I feel like four months is a more realistic time to "worry" a little if nothing has happened with your application by then.
Good luck and although I know is hard try to be patient