The number of competitions that Madrid has to play certainly forces them to be able to rotate players well, as a big team and handled by experienced coach, of course they don't want to lose a single trophy from the competition they participate in ,so I think all competitions will certainly be played seriously and not just La Liga and the Champions League, see the number of injured players at the moment, Madrid journey may be a little difficult, but that doesn't mean they won't focus on all of these competitions, because we know how Madrid and Ancelotti have had great ambitions to win every trophy so far.
The player injuries experienced by Real Madrid at this time could indeed be an obstacle for Real Madrid to perform well in every match, but I also believe in the level of consistency of the current Real Madrid team. Because Real Madrid's mentality in the Champions League is always very big and Ancelotti himself certainly knows what to do and give his best for the team with the current conditions even though one of them is having to be smart enough in rotating players when the match schedule looks quite close for several competitions.
I have also observed that Real Madrid performance in Champions League is usually different from their La Liga matches maybe this should be due to the Anceloti influence who is gifted in the Champions League and the only coach to have won the champions league five times. This year they are still a big threat for any team as they will be playing to defend the title. They might have started badly with their La Liga but they have a fast way of putting their house in order to confront any opponent. Most definitely they will regain the consistency they are known for and will give Barcelona a big fight as usual.