It's not a case of wholesale change really, just slight tweaks, vary your approach and sometimes go for the quick long throw or kick from the keeper as well as the playing out from the back.
I thought in the first leg against Chelsea we mixed it up a bit, playing out from the back and also kicking it longer. Not aimless balls either but looking to pick out a wide player. Mixing it up a bit occasionally seemed to work. At the moment the opposition know what we're going to do and therefore can set up to press us immediately. You have to mix it up a bit to keep the opposition guessing a bit. Same goes for occasional balls over the top in behind full backs, instead of always playing it around in front of them.