Mark Warburton said his side will have to rise to the challenge against a Barnsley side looking to get off the mark on Tuesday night.
The Tykes have lost both of their opening games and the Forest boss is under no illusions that it will be a tough match at Oakwell.
He said: “We said to the players to put themselves in Barnsley’s shoes. They put in a good performance against Bristol City and didn’t get the rewards from that first game. Then they played very well against Ipswich and didn’t get their rewards and Ipswich grabbed the points.
“They have played two, with zero points on the board and a negative goal difference. They will be absolutely desperate to get their first points of the season at home in front of their supporters.
“We have to recognise that and if we think we are going there thinking it will be an easier game than on Saturday then we will be sadly mistaken. We have to prepare well, as we have done and we have analysed well and it is all about delivering a performance tomorrow night, rising to the challenge and hopefully securing three points.
“They will be a very tough opponent. The disappointment of the first two games means this one, particular at home for them, will be very acute. They will look to come out and start fast and they will pose a really stern test.
“There is no lack of respect or underestimation from us but we go into the game in good form, the squad has trained well and is strong and confident and we are looking forward to it.”