Don’t wait until they’re older…
When your kids are young, they think you know everything.
They think you’re infallible.
Of course we are not infallible, but this is the time to capitalize on spending time and investing in them with your presence and your knowledge, however little it may be.
Teach them even one ayah, as narrated by the Prophet ﷺ.
They will soak in whatever you say and might even practice it better than you!