I watched all of Chelsea's matches, especially the last 3 matches. Chelsea were absolutely convincing to win the match against Brentford, so of course they shouldn't miss any of the chances they managed to create. There is high optimism among fans, but Pochettino certainly has to proceed very carefully. Chelsea's probability of winning is very high against Brentford, so they shouldn't really throw away that belief to win the game.
The most interesting match this week is the Manchester derby match. I think it will be highly anticipated despite the fact that Manchester United doesn't have a good chance of beating Manchester City. Manchester United, who are playing at home, are not believed to have a high chance of winning, but on the other hand, Manchester City is really the favorite in this match.
I only witnessed the last few matches that Chelsea played and indeed they have shown big changes since playing bad at the beginning of the season, so to face Brentford at home is not a difficult opponent. If they face Arsenal they can play well and be able to make two fast goals then it is impossible when facing Brentford they will experience defeat at home. But it really depends on how the coach and if Pochettino makes a mistake again then it is very disadvantaged if Brentford is able to hold Chelsea's draw at home.
What Pochettino needs to watch out for should not be repeated again like a match when facing Arsenal, two goals ahead but unable to maintain until the match ends because it makes a change of players inappropriate, thus making them have to get a draw. Even though Chelsea almost won the match because in the first half they played much better and their defense is also considered solid.