Almost 9 yrs old DS.
He fully believes in Father Christmas . His best friend does not and has started to tease DS.
Some of the class do still believe , some (especially the older ones) do not .
I think it’s time for the truth if he asks .
My DM thinks we still have a few years left if we tell him “of course he’s real”.
I was 12 when I found out 
I don’t want DS to be teased or tell him too early but I get his friends have more influence than me 
He definitely believes 100% .
WWYD ?