I think its the best time for pep guadiola to change his pattern of play because all teams have mastered that game Pattern and have developed a suitable game plan to withstand such pressure.
Pep is never going to change his philosophies and you cannot give him so much stick for that, that philosophy has won him so many trophies, and it is the reason why he is one of the greatest managers in footballing history. That said, it goes without saying that something desperately needs to be done, we are only three matches in, and they are falling out of the title race already.
Since it is obvious Pep would never change how he plays, if he continues to lose games in this manner, then the club might seek a new manager with new tactics, and it could be what they desperately need.