I had to make sure I was facing my husband and that I had his full attention and even then he didn't hear everything. He always turned the TV up way loud so he could hear it and I was going crazy. We use a TTDY phone in our house, so he was ok for the phone. But for going to see about it? My husband was stubborn for 6 months and wouldn't go to get a hearing test. He couldn't hear me for anything, it was so frustrating. So, I started to "not hear" him when he spoke (turned the tables) and within 3 months, he said we both need to go have some hearing tests!
So,Talk your 63 y/o person into going for a hearing test, and the audiologist will tell him if he needs a hearing aid or not. My husband improved 100% after he got his hearing aid.
If you have a Sam's Club or similar warehouse type store, they offer the test for free if he doesn't have insurance OR if he doesn't want to pay for it. Sometimes all a man needs is to find out from a a free test that he might have a problem, then he will go see about it to a doctor.
Don't give up. Good luck.