I mean, he took 6 months to adapt to the pressure and expectations of playing for Madrid, nothing new or noteworthy honestly. Same thing has happened to many a great player, including Zidane
Now he's back to his level. The whole fit issue with Vini isn't really an issue either, of course, because they're way too good and especially way too good individualists and different enough players not to figure it out
Rather the issue is with team balance. The reality is we can't afford all 4 of Vini, Mbappé, Rodrygo and Jude at the same time against great sides, something the last clasico taught Carlo for good, so we most likely won't see it again. Ceballos is playing well and at this point I doubt he loses his place in midfield, Camavinga is going to have to be ready for his chance
Beyond that, the backline continues to be an issue due to the injuries