It would be foolish to expect a better performance from Chelsea. Maybe the team's performance will stabilize a bit. But I don't think Chelsea deserve to be in the top four of the points table at the moment. This club has a lot of internal problems. The management of the club is not experienced and this is their first weakness.
Your opinion looks somewhat reasonable but you should understand that nothing is impossible, Pochettino almost made top 4 last season despite that being his first season with the team. They are quite inexperienced both the players and the coach but they have a lot of talented players that can easily be groomed to stars if the coach does his part well.
I don’t see them having internal issues i just know that the owners have the problem of patience, they are not patient enough to give managers time. If they can give Enzo Maresca time to build his team I believe he is destined for greatness.