If you haven't read this, it may answer some of your questions.
Doctors in Ontario are required to report certain conditions to the ministry (it's the law). There's a checklist of 16 or so conditions that doctors are obligated to report e.g. heart conditions, black outs, and alcohol dependence. They fill out a form and send it off to the ministry. The ministry will suspend your license until they are sure you're not a danger to others behind the wheel.
You'll have to get cleared by a doctor. Once a doctor is convinced you're OK, they'll send a report to the ministry. From there, it's a waiting game. Your condition is considered high risk, so other conditions will get priority over yours and it may take even longer.
There's no timetable. Your doctor will clear you whenever he/she feels you're fine. That's up to them. From there your case will be reviewed by the ministry and you'll get clearance to resume driving. There's no timetable when they'll review your report. Some people get back on the road fairly quick, others with complex conditions may not drive for years.