I know it doesn't help, but in majority of the cases that receive delayed test invites, their oaths are scheduled much faster. Meaning we all will be getting our oaths scheduled around the same time, even if your test is 2 months after someone who applied around the same time as you.
To support this claim, please see the following 4 September applicants processed at Scarborough. Tests were conducted from Jan to even as late as April, but all of them got scheduled for Oath at the same time.
Hope you get your invite soon!