It shouldn't come as a big surprise to see DS not quite reaching the form he displayed at the start of the season. Most of us were unprepared for his spectacular performances and how quickly he established himself into the squad and first team. He is a young player, and it was always likely that his early form would dip.....marginally. He is still athletic and getting into decent, penetrating areas of the pitch. Where he is showing a slight weakness is the final pass, often rushed, or played blind. Maybe needs to sharpen up his concentration a tad.... he can mentally lose focus now and again.
Still, all said...he's a major talent and will only get better.