I think most men have been passed back to their GP surgery for PSA monitoring by your stage, Trev. You need to speak to your GP practice to arrange the next one, perhaps, and then clarify whether the urologist can access the results remotely or whether you or the GP would need to email the urologist's secretary each time you get a result? It is normal to stay on the urologist's books but to not see him / her anymore unless there is a problem.
It is common practice to have 3 monthly tests for the first year after the post-op PSA (so up to 15 months post-op) and then, assuming results have remained <0.1 to move to 6 monthly tests until 5 years post-op and then annual. You will need annual PSA testing for the rest of your life.
In John's case, once PSA testing was handed to the GP practice, it was our task to arrange the test at the right time, get the results from the GP receptionist and email the consultant's secretary with the result. if there is any issue or rise, we can arrange an appointment with the consultant directly via his secretary.