Vaccine or testing policy – ON, QC, MB, BC

We are planning to implement the vaccine or testing policy as we are not a federally regulated business but deemed essential. We do have customer serving (in-person) positions and it is impossible for everyone to work remotely. Now that testing is not readily available, this policy is I believe very difficult to enforce and hence we should change its direction of it. Do you know if other companies that had already implemented this policy and how they are coping/adjusting their policy?