I would say that Real Madrid are not very interested in La Liga matches at the moment. They have a decent point lead over second-placed Barcelona in the table. And winning the La Liga title is not a difficult task for Real Madrid now.
So maybe Real Madrid will now try to perform well in the Champions League. The Real Madrid team will face the powerful Manchester City in the Champions League. And it is very difficult for Madrid to beat Manchester City. Even most of the gamblers are considering Manchester City as the favorite in this match.
Real Madrid will play against Athletic Bilbao, Mallorca and Barcelona in the next three matches in La Liga. Although Real Madrid is a strong team, they are likely to drop points in these three matches. Because Madrid's main goal is to perform well against City. So Madrid probably won't give full effort in these three matches.
I don't really agree with you if Real Madrid is not really thinking about the remaining matches in La Liga. Until now, Real Madrid is only eight points ahead of close rival Barcelona, but I don't think that's safe at all. I still believe that El Real will always focus on La Liga even though they have to also concentrate on the Champions League. The La Liga trophy is Ancelotti's main target because it is starting to look easy but for the Champions League everything is still possible but it still requires a lot of concentration and of course it is not easy.