Hey and welcome to the forum!
No reason to be worried (yet!). Ecas doesn't always change - mine went from "application received" to "decision made", no in process, and no communication from London for the whole time.
It seems that London is working on applications received in end of august/beginning of September, so hopefully you'll hear soon... either you'll see directly "decision made" on ecas, and it means that they have sent the COPR (assuming you're from a visa-exempt country) to the applicant mailing address.
How long does it take - that's difficult to say! it takes 9 months to process 80% of the applications, but quite a few are processed before that. If you look at the spreadsheet (link in my signature) you will see who has heard back from CIC and who is still waiting ( from the forum of course). So - for now, you are within the "normal waiting time", nothing to worry about.
Good luck,
Sweden