Aor is really just saying ircc receive your application and they will give application number,AIP is letting you know that u met eligibility to apply under the category and with your AIP u can now use your AIP to apply for open work permit..
To be honest the processing time for inland applications is about 29months but am most certainly sure you will get you ecopr with a 2 months time just keep checking your email and the portal you use to submit your p2 information
Finally!!!!
Timeline:
Application: May 20 2024
Final decision: February 06 2025
P1: February 07 2025
P2: February 10 but the system say February 11
Ecopr: May 06 2025