I started coding when I was 12, which itself was strange. I attended a top 10 engineering program and around half of the cs students came in with 0 programming experience. There's no rush. Let kids be kids, if they want to code great, just don't force it. And don't be upset when they burn out after 1.5 hours of extra work a day.
I started programming when I was 19, because that's when I got a computer (more projection) but in any case hard to not project onto your own kids. I think.
