My feeling is take each game as it comes , as cliched as that sounds as so many factors that can come into play.
For example we beat Chelsea and go 9 points clear , Spurs then under more pressure Sunday. We lose and gives them less pressure as a win cuts it to 3 points. You also don't know mindsets of teams we play just yet , Liverpool for example is much tougher game if they can still win league than if they are out of it with only pride to play for.