Hello and welcome to MedHelp's forums. Thanks for the question and we apologize in the delay in response. This is an unfortunate problem that many in our aging population have. https://www.nia.nih.gov/health/urinary-incontinence-older-adults. One thing that can be successful is timed voiding. This empties the bladder on a schedule. Some men see a physical therapist and do pelvic floor exercises that help with bladder control. And of course, medical conditions such as enlarged prostate should be addressed as best you can.
Let us know how your father is doing.