There hasn't been much talk over in France, where I live, over new rules from the FAs in England, Scotland and Northern Ireland about heading being banned in training for kids under 12.
The French tend to do things their own way, so they may react in time, but as someone who coaches kids over in France, I wouldn't be against the new ruling that has come in.
A lot of coaching now is focused on playing the ball on the ground, being able to pass the ball, and as a coach you can show them videos of players heading the ball.
Then, as they get a bit older, closer to 14 or 15, you can work on their heading more on the training ground. You can still limit it, try not to do 50 headers a day but let them work on it so it can be realistic when it comes to actual matches.
At a younger age, a lot of kids find it hard to kick the ball high up into the air so the ball is on the ground a lot more, that's the case in France anyway, so your role as a coach is showing them the position they need to be in to deal with the ball, not just being able to head it away as far as you can.
If they can learn that side of it, being in the right position to deal with a high ball, then they can get used to heading when they're that bit older.