We are trying a sticker chart for my 2.8 year old son. He insists on running away everytime we want to change his bum and proceeds to jump all over our new sofas. I've lost count the amount of times he goes into time out and we say "no sticker"!! The message isn't getting through when he does run away we don't treat it like a game and don't react, but godness it's driving us insane! Any tips/ideas! He's driving us absolutely loopy