"Browing"

It’s one of those words that, despite modeling the correct pronunciation by repeating what he’s said, continues to be his own.
The berries on my tree are done browing now. 
Hey, I browed all those new flowers (mums)!
And he uses it most often to talk about baby brother.  The baby in your tummy will brow big just like me!
Now that I’ve written it down, it seems perfect. A little brother, growing.
JEB