Have trend with Madrid winning Champion League back to back and sure this season they will try to winning again Champion League as back to back after last season success won this tittle.
They have no other way if they want to bring a trophy to Madrid this season, so indeed the only chance is the Champions League now, regardless of whatever conditions they are in now, it's difficult for La Liga and if the Champions League is released, then indeed they have nothing more at stake and have to fast for the title.
Madrid clearly knows this and their condition is not good, so inevitably they have to go all out for the Champions League, even though they will definitely experience quite tough matches in the quarter finals and semi-finals.