The Nigerian forward is hoping that Saturday's 4-2 victory over Swansea can help kick-start Rovers' season, with the club currently sat in the relegation zone.
Speaking to Radio Rovers, he said: "Hopefully the season starts now for us. We are ready for Sunderland now, we know it won't be easy, but if we keep playing like this we will be fine.
"The pressure is on the team to perform and if we keep fighting as a team then we will be fine."
Yakubu netted all four goals in the win over the Welsh side, and is currently top scorer at Ewood Park this season, but the former Portsmouth striker insisted three points and a strong team performance was what mattered most.
"It was great not just to score four goals but to get the three points was the most important for us," he explained.
"I always believe I can score goals no matter what league I play in. But you have to give credit to the other players, without them I don't score the goals.
"As a team we just have to continue to work hard and I believe that we will be fine."