Urine problems with Dad. Any ideas?

My father and mother live in a retirement community (recently moved there.) My father has incontinence and uses depends pads. Since they moved to the new community he has had many accidents and is soaking through pads. I should also mention that he has early signs of dementia. My mother feels embarrassed and depressed about the smell. He does shower every day. I set up a schedule for him to follow to change his pads, but he isn't following it and my mother is too embarrassed/annoyed/tired or whatever to get after him to change his pads over the course of each day. I just don't know what else to do. Clearly he is forgetting or having sensation problems that the pads are soaked. Any ideas or suggestions would be so helpful.