After Pass My Test, Application Status Still Showing In Process

[ImmigrantCA]

App Type: Single
Physical Presence Days: 1207
Application Sent: July 05, 2019
Application Delivered: July 07, 2019
AOR: Sept 20, 2019
In Process: Oct 31, 2019
Test Invitation: Dec 12, 2019
Test Date: January 07, 2020
Test Passed: January 07, 2020
ECAS Status as on today: Still In the process
Decision Made: Still Waiting .................

Dear Folks,

I mentioned my timeline above. I passed my test on 7th January 2020. I have also been interviewed and during an interview, the interviewer told me that everything looks in my file and I will get my Oath Letter in 2 to 3 months' time. Since then my application status is still showing ''IN PROCESS''. I have noticed that many people's stats changed from ''In Process'' to ''Decision Made'' In 1 or 2 days maximum.

I call IRCC and ask about my application status and I have been told that everything is fine just wait for your oath letter. They also Congratulate me over the phone call and said its a matter of time, just wait.

My question is that is it a normal thing that they take a long time to change online status? Or What?

Regards,
Amb