Final answer:
The nurse should encourage Mr. Haverford to perform pelvic floor exercises several times daily to help with his occasional incontinence and dribbling.
Step-by-step explanation:
The nurse should encourage Mr. Haverford to perform pelvic floor exercises several times daily to help with his occasional incontinence and dribbling. Pelvic floor exercises, also known as Kegel exercises, can strengthen the muscles that control urination and help reduce episodes of incontinence. By regularly exercising these muscles, Mr. Haverford can improve his urinary control and reduce embarrassment.