It depends on if there is a condition on your PR card. Some investor/business programs are conditional to your starting a business and making it work in the next couple of years. If that is the case, you can not move until you have filled this condition. If there is no such condition, you can move earlier.
Most likely you will at least have to sign some kind of document stating that you intend to settle in Quebec. If you do not intend to settle in Quebec, you know that you will be lying on this form. You realize that lying on your PR application forms can cause your PR to be cancelled if you are caught. Therefore, it would be advisable to stay in Quebec at least long enough to say that you attempted to settle there in case somebody will ask you later.
Thanks for your reply. It's really helpful to me.