You will not be eligible for OHIP until you’ve received your approval in principal or collected your COPR (given at landing interview). Unfortunately those of us in Ontario have to wait until we’re almost at the end of the process.
ECAS is
https://services3.cic.gc.ca/ecas/security.do?lang=en another way of tracking the application. Typically it’s best to enter the Sponsors details as they can see both the Sponsor and Principal Applicant status. Please be aware this does not get updated that often. Mine was basically in progress until Medical Exam then it said Medical Exam received even after I passed it and then, finally, to decision made after I received the Decision Made email. I have yet to have my landing interview as it was postponed due to COVID so I can’t tell you what it says after that. But basically, for me, it was more of a way of checking my application was in the system initially. I just used my CIC account for tracking progress. CIC is where you’ll get account messages (such as the medical request form) sent to.