You learn very fast now. Lately, we have been playing “lettertjes omdraaien”, exchange letters in words. Even though you don’t really get the concept of spelling yet and how several letters make up a word (it is interesting that this mental apparatus is apparently rather complicated; letters are an abstraction, the unit of our language are words insofar as they are the shortest sentences), you understand the fun of jumbling the letters of words.
How I enjoy your laugh when you say “hey! you confused the letters!” Do you want to raw a drabbit? Do you pake a ticture? Do you want to vlay the piolin? What is a Pomcuter? A Sinodaur? Shall I bring you to Dinkergarten? Be Farecul when you ross the croad!
It is a misunderstanding that it would “confuse them”, just like it is a misunderstanding that toddlers wouldn’t be able to handle several languages well. They can, if they grow up in an environment where they are fully immersed in both languages simultaneously. It won’t confuse them, because the correct speech is constantly reinforced. Similarly, my letter jumbling game will only remind them of the correct word and reinforce that. Of course, I always make it explicit that we are joking.