Is it really just last couple of games? In the league he did not score in 8 from 11 games. Two goals against SU and Burnley were out of the context because it was already game over and in those games he also had some misses...
That leaves only Southampton where he was excellent! In CL in 5 games he did not score apart from penalties! Strikers are judged by goals as always so he needs to improve big time.
So take away pens he scored in just 3 games from 16.