I'm doing something similar. I've decided at 62 to learn to play the keyboard and be able to read music. It's late in the day but I'm slowly getting there 30 minutes a day.
Anything you can do that brings you satifaction or exercises your brain and keeps it sharp is a great thing.
Used to know a guy who was as old as I am now when he took up Go. Took him less than ten years to reach a 3 dan rating, which is on the edge of where common wisdom says you need to start as a child to achieve better than that. But any time he wasn't working, he was looking at Go games (and I suspect sometimes when he was working). If he started 5 years younger or lives long enough I expect he'll disprove that rule.
Of course it always helps if you're a polymath. There's a lot of social friction involved with picking up something that is expected of 14 year olds. If you can teach yourself you can skip over a lot of that.
She was doing a lot more than 30 minutes per day, but it was pretty comforting for me to realize that nothing's really stopping most people from continuing to learn and grow deep into their twilight years if that's what they want to do.