The Germany international, who was signed in a £47.5 million deal from RB Leipzig last year, has struggled over the winter period with just one goal in his last 26 games for Chelsea.
Werner has been linked with a return to the Bundesliga at the end of the season, with Chelsea targeting Borussia Dortmund striker Erling Haaland.
But Tuchel has backed the 25-year-old to start hitting the target for Chelsea.
‘Stop reading! What do you read? Read a book,’ Tuchel replied when asked about the reports linking Werner with a transfer.
‘For Timo, I think he has no reason now to be frustrated because he did an amazing match against Liverpool, maybe his best match since I arrived.
‘Then he had a good match against Everton with a lot of chances to score, which he normally is clinical enough and strong enough to score.
‘He did not score, okay, this sticks in a situation like this, this can affect his self-confidence, yeah, of course. But what does it help?
‘The clear advice from us don’t focus on the result, focus on the process. Get your decision-making right, get your technique right, take good decisions, for the decision take the right technique and the ball will do the rest, and the opponent’s goalkeeper will do the rest, either it’s in or he does an amazing save.
‘He can improve from there but there’s simply no time to reflect on what’s going to be in the summer or next year. There’s simply no time.
‘In the moment I don’t see why he should be frustrated. We gave him a little bit of time to breathe against Leeds, it was hard for him to come on, so he was not too much involved in the last 20 minutes because it was not our best game.
‘We expect our guys to create more chances to be more decisive, yes, because we expect the defends to play at the highest level, so we also expect our strikers [to do the same].
‘In the end it’s my responsibility to put them in the right mindset and the right positions, to let them play regularly, and from there on we go. And maybe all the stuff that you read will hopefully disappear soon.’