No wins in three: Should West Ham look at these tactical changes?

West Ham United have had such a great start to the season. Beating the likes of Manchester City, Liverpool and Chelsea. However a couple of injuries and we have started to struggle. In our last three games we have only got one point, drawing with Everton and poorly losing to Watford and Tottenham we still sit 6th but we need to start picking up points. We need a result on Sunday, so what should we change?