The previous Xavi era mid-season was always Barcelona's main problem in maintaining consistency and this is likely to happen again in the Flick era when he is not really able to maximize the players available in a fairly busy schedule.
I don't think Flick era will be the same as Xavi era. So far, I think Barcelona can perform quite consistently. Although Barcelona has busy schedule and has some injured players, Flick can deal with the problem very well. Flick has something that Xavi didn't have at that time. It is the confidence of the players, Barcelona players look more confident to play in each match now.
We will just see if this will happen or not because when talking about the aspect of trust in the end something like that can easily change, previously Xavi was also trusted and even had a very good relationship with the players and even management but over time it changed which made Xavi ultimately unable to face the pressure in his second season so that this possibility could still happen to Flick.
Indeed, for the current issue of trust it is still very strong where Flick can freely tinker with the squad and attack scheme without intervention or experiencing internal problems, but we will not know the future because this could be the opposite later.
When Consistency starts to get out of control, usually some other internal problems always arise so that if in the end Barcelona or Flick wants to do it until the end and is considered an important part of Barcelona then he must maintain consistency now until the end.