The on-loan Manchester United attacker impressed for the Black Cats in the early stages of the campaign, but has missed a lot of football in recent weeks after picking up an ankle injury.
The Belgium international started and scored for Sunderland's Under-23 side earlier this week, however, and is now hopeful of being involved in the Premier League clash with Leicester City at the weekend.
"I've come off the bench a couple of times and I started for the Under-23s earlier this week which was good to help my fitness. It's good to be playing games again after being out and it will help me find my levels," Januzaj told the Sunderland Echo.
"It was a good goal and it helped the team and hopefully it will lead to me scoring first-team goals as my ambition is to score in the Premier League, so hopefully I can get my chance and take it this weekend.
"It was good to play but I felt like I was getting into my rhythm at Sunderland so [the injury] did come at a bad time, but I'm getting back now and I'll be on top of my game very soon."
Januzaj played the final 11 minutes of Sunderland's 2-0 defeat at Liverpool in the league last weekend.