Very nice to hear from you. Following to your requirement, we do not suggest you to get the new veneers done to replace the existing ones, as the removal of the veneers may cause the original tooth little smaller too and this will affect the retention of the veneer as there will be less amount of the enamel left. At this stage, to make each little smaller, the adjustment by using the fine diamond bur to reshape of the veneer is your option but please note that the surface of the porcelain after this adjustment will not be as smooth as now after the adjustment as the glazing surface will be grinded down.