Unfortunately PNP and CEC are the slowest in processing as of now. Why is it so, there can be theories, or agency priorities, but nothing definite can be said.
The ADR for personal information is asked if there is a gap in the information which you filed or in case IRCC needs to verify by looking into your application. Usually, when ADR is requested there is a placeholder where you can upload those documents. If that is not there, the only way to send documents is through CSE, which you did.
After you send documents by CSE, it takes a long time for them to acknowledge and being stressed during that time is evident, which I understand.
However, all I can say at this stage is that you should raise another CSE, or send an email to CPC Ottawa, given that your application is there. The email id of CPC Ottawa is
CPC-CTD-Ottawa@cic.gc.ca
If your application is at CIO-Sydney, you will need to stick to CSE.
GCMS notes are helpful to know which stage your application is at. If your application has not even processed, there will not be anything substantial in the notes which will help you. Usually in EE applications which are processed within 6 months when you request GCMS notes after 45 days post AOR, you at least see R10 (completeness check), and some movement in eligibility.
There is no harm in requesting GCMS notes, if you so wish.
I do not speculate or predict, but this all I can say as of now with the information you provided.
I hope it is helpful.