Juventus have a busy schedule in September. In Serie A, they have a number of crucial matches, and dropping points in these will see them fall far behind in the title race. Juventus also have two important matches against PSG and Benfica in the Champions League. As many players are still injured in Juventus. So I don't think Juventus will be able to stabilize very soon. We will see unstable and erratic performances from Juventus in the coming months as well.
Dybala is a talented player indeed. But there is no reason to think he will score regularly. He was never a regular scorer or matchmaker. But he can perform well in important matches. I think Dybala's performance will improve a bit more with Mourinho.
September become busy schedule not only for Juventus but also team participants on UEFA Champion League, I think not only with Juventus but also have Milan, Inter and Napoli have match Champion League stage group. Exactly with Juventus they faced problem trough few days later playing on Champion League still player get injury like Paul Pogba and Chiesa. Really important match for Juventus on September against with PSG and Benfica but I believe if keep consistent have chance for Juventus for lead group stage, but problem faced right now how difficulty keep playing with consistent performance, two draw in last two games on domestic league I worry will give impact for Juventus on UEFA Champion League.