~Snip
I think Madrid should remain focused on La Liga this week, because however in the near future they will face a match against Osasuna, indeed if we look at the quality of Osasuna of course they are not comparable to Madrid, but to secure 3 points of course Madrid should not underestimate Osassuna in the match later, currently girona and barcelona has left Madrid behind them but if they underestimate their opponents then it is not impossible Madrid will Slipped and can be chased by Girona and Barcelona in their remaining 9 matches.
I don't think that girona will give up that quickly in the hunt for the trophy because with 7 points behind there is actually still hope for girona to approach madrid even though it is a little difficult.
The Champions League match will of course be Ancelotti's focus in addition to La Liga, but I think at the moment it is still too soon for Madrid to focus on the Champions League and make them no longer concentrate on the league, the first leg of the Champions League will be played on April 10-11 and the second leg, April 17-18, making it possible for Ancelotti to prepare their squad well in order to avenge last season humiliating defeat to Manchester City.
Nobody expects Real Madrid to lose focus on La Liga even though the Champions League quarter-final match is very important for them. Ancelotti doesn't need to think about rotations in the next two matches in La Liga because the first leg of the quarter-finals is not too close. Ancelotti must win the next two matches against Osasuna and Bilbao, that will make them comfortable at the top of the standings.
Rotating now doesn't make sense because the first leg is still very long away. A month is quite a long time, but maybe Ancelotti can already think about and study what strategies can benefit them when they face Manchester City at home at April.