Poyet took charge of the North East outfit in October, and at one point lead them out of the relegation zone - but they have slipped back into the bottom three in recent weeks.
Sunderland take on Norwich this weekend, with Poyet admitting that they are planning for next season - but their sights are firmly set on that being in the Premier League.
Poyet told the Sunderland Echo: "We have had to start looking towards next season because we are getting close to the summer.
"But I have to be honest - at the moment I have only made plans for the Premier League.
"I hope it doesn't happen, but if we lose the next three games then maybe I will need to look at another plan!"
Sunderland's recent appoint of director of footballer Lee Congerton has meant Poyet has been able to push forward with his plans.
"Lee was here all last week, and I spoke to him about plenty of things," added Poyet.
"We've started working together, and that relationship will be very important."