it's actually closer to 11mths: R. ex rel City of Toronto v. Andrade, 2011 ONCJ 470 (CanLII) http://canlii.ca/t/fn8jv11b (Stay) doesn't usually work under 13 month delays from the original offence. If they do not offer discloser before your trial, or they offer it at your trial, but it has not been a year since your offence date, the justice will usually grant adjournment. Mostly likely they will delay the trial between 3 weeks to 3 months.
Even if you get discloser within a couple days of your trial you should request an adjournment to prepare. If it has already been at least a year, request a stay directly. If refused, request adjournment.
If your adjournment date puts the total time since the offence near 13 months, you will have a good chance of sucess at requesting a stay at your next trial date.
The question is: if they will try to give me a disclosure just before the trail, do I have to accept it or reject it? What should I say to prosecutor?