Liverpool had two wins out of their eight league games going into the game against the Premier League champions at Anfield on Sunday.
The Reds have been struggling for consistency this season and there are major doubts over whether they will be able to break into the top four by the end of the campaign.
But a 1-0 win over Manchester City at home has given them a major lift and Aldridge admitted that it could prove to the turning point of their campaign.
He conceded that ahead of the game he was worried about the way the top four was shaping up and stressed the importance of getting another result when West Ham visit Anfield on Wednesday night.
Aldridge wrote in his column for the Liverpool Echo: “Sunday’s victory has to be a turning point in the season for Liverpool.
“I was a bit worried before the game as the top four is starting to take shape.
“City are going to win the league, in my opinion, Arsenal are yet to falter, Tottenham are doing brilliantly and Chelsea are also in the mix.
“We needed something on Sunday and we need something against West Ham as well, enabling us to go on a run to get ourselves in the shake-up.”
Liverpool did suffer another injury blow on Sunday when Diogo Jota picked up a calf injury in their win over Manchester City.
