He said: "People seem to be marking me tighter and getting closer to me than last season, but that is only normal.
"After last season they are more aware of me and how I like to play. They know how me and Steven (Gerrard) like to play, passing the ball between us.
"Unfortunately we have not been able to play together as much as we would have liked this season because of injury. But when we do it is up to us to adapt to overcome whatever is put in front of us."
He added: "We have had a lot of league draws this season, too many at home, but in general the opposition's approach to us seems to be different to last season.
"We have been up near the top of the table for a long time so a draw against Liverpool is like a victory for some teams.
"That is why it has sometimes been difficult for us to play well at home. Teams just come to Anfield to defend, we know this and we have to improve at home when teams play like this against us.
"We have drawn six home league games, which is not normal for a team in our position in the league, but that is the nature of the Premier League."