The 19-year-old has started only two of Chelsea's first six games under Xabi Alonso this season, a sharp reduction from his regular involvement last season under Enzo Maresca and then Liam Rosenior, when he scored a dramatic late winner against Liverpool and a memorable goal in the 3-0 Champions League win over Barcelona.
He was withdrawn at half-time in the Carabao Cup defeat to Leeds United, with Chelsea trailing after Alonso made several changes to his starting line-up.
Estêvão missed this summer's World Cup through injury but has now joined up with Brazil for friendlies against Australia and India, and addressed the situation at a press conference in Brisbane.
He said, "I think every coach has their own way of playing. Of course, we work every day, I give my best every day, and that's what I do.
"We have quality players at Chelsea, so what I do is focus on what I can control. I try to give my best in training."
He added: "When I get an opportunity, I try to give my best; it goes day after day. I try to seize every opportunity I have, I try to control everything I can, and I leave it in God's hands, and I trust myself a lot, too."
Alonso addressed Estêvão's situation earlier this month, confirming the Brazilian remains part of his plans: "Este is ready, he's training well. He's fully involved and with a very good attitude every day."
The manager also spoke of his long-term potential.
"Este [can] 100 per cent [have a big impact], because of his potential, because he is so young. But he is in that process to adapt and to learn quickly. And the season is going to be long."
Alonso acknowledged the pair had discussed the matter directly, without revealing details.
"Private conversations should remain private. The players that have the desire and the hunger to prove and to show every day that they are up for the challenge, it is what we want to create here in the building. And Este is part of it. So he has had a very good attitude, a very good mentality to prepare every game and to be ready for the team."