It is a fact that Real Madrid couldn't score more than one goal in their last two La Liga games. But they were able to score more before these ones in the absence of Benzema as well (e.g. 4 goals vs Mallorca, 2 goals vs Betis).
Ancelotti must see this fact as a problem that must be resolved immediately considering Real Madrid will soon play in El Clasico. Barcelona as one of the most prolific teams in La Liga could embarrass Real Madrid if their attackers can't score more than one goal in every game.
Real Madrid must not rely too much on Benzema when scoring goals, they must take the slightest opportunity without having to pass the ball to Benzema feet. El Clasico match is very important for Real Madrid to regain control of the first position in the standings, because currently Real Madrid and Barcelona have the same number of points in the standings list.