Flick has rotated fairly well so far. Only Pedri has played a lot but I'm not that worried. He'll start most games and be subbed whenever possible.
The rest have been rested here and there. Lewy should be fine, Rashy and Ferran only benefit from a lot of playing time.
I think Flick might rotate a little bit during weekend again, mainly in the back line, maybe also Olmo.
Then we go full force v PSG.