Mauricio Pochettino says Chelsea "took advantage" of not being in Europe this week as they used the break to work on kick-starting their season.
The Blues failed to qualify for Europe for just the second time in 26 years after their 12th-place finish in the Premier League last season.
They have won just one of their first five games this campaign to sit 14th.
"The circumstances have given us time to work and we've had a really good week," said Pochettino.
"It has been good to recover players from the international break.
"It's a time that, of course, for the fans is difficult because they are used to being in Europe but we need to take advantage of the situation."
Pochettino said the fans were entitled to express their dissatisfaction after some jeered the team after their goalless draw at Bournemouth last weekend, although he did not share their frustrations because he is satisfied with the team's underlying performances.
"I believe that the fans will be behind us. It's normal that when you don't win they are disappointed and show their feelings. They won't be happy after a draw at Bournemouth," said the former Tottenham boss.
"Fans always want to win and I'm sure they will support us. The players need their support.
"I am not frustrated because I think the team is performing well and missing many key players. I am disappointed because I think many teams with less score more. That is why we feel bad. The players deserve more."
Nicolas Jackson was booked for the fourth time in five Premier League games against Bournemouth last weekend
Pochettino also said he has spoken to the Blues' Senegal striker Nicolas Jackson about his behaviour towards referees.
Thy 22-year-old summer signing from Villarreal is already one yellow card away from suspension after being booked for dissent in four of his first five Premier League games.
"We had a meeting with him and also Enzo [Fernandez]," said Pochettino. "A striker, four yellow cards only for talking with the referee. It is so cheap and it is going to bring a difficult situation to the team.
"He understood. Jackson is young, he is going to be a fantastic player. He needs to be calm and relaxed.
"We are talking about young players, you can blame me or blame us but they need time.
"He needs to be clever and not protest to the referees."