Timelines can vary between applicants even among the same office. Yours will come soon.I just had a look at the spreadsheet and all 3 mississauga applicants including Raj, who had test invite between june and july 18th got documents request, someone who had invite with me 31st may to 30th june already have DM and mine still no update
If it'll make you feel better, raise a webform and ask a leading question like "Are my physical presence, language and prohibition sections being worked on currently" or something like that. Sometimes, there is a small but non-zero chance that you'll get a relevant response.
Mississauga office is on a roll and applicants might see some progress in the coming weeks.