They will stop themselves. Pep always overthinks the CL and does some crazy formation he's never used all season to mess things up. They should continue exactly with this same team he's played for all of January and February then they will have a strong shout at winning it but knowing Pep he probably will try his crazy experiment in a CL game and mess it up.
Yep, exactly this. We've pretty much gone on this winning run with an XI of Ederson, Cancelo, Stones, Dias, Zinchenko, Rodri, Gundogan, Bernardo, Foden, Sterling, Jesus. In the 11 games since we last dropped points in the league, the Sheffield United match is the only time we've made more than two changes from that line-up (except for De Bruyne's presence before he got injured, which was usually in place of Jesus who had COVID back then).
It's so important that Pep trusts this XI when the Champions League comes around. They've proven they can do it vs Spurs, Liverpool and Chelsea. Obviously Bayern and Atletico etc are a big step up from that, but they've earned a chance, and it's a lot more likely to work than randomly going 3ATB with Gundogan false 9 or something.