As I've said many times, traveling to Kaguya's dimension is no small feat. Even with Sakura and Naruto's clone, Obito said it would give them the bare minimum.
Momo needed pills to travel through time-space.
I'm not comparing Sasuke's version to her world time-space. Obito who still had Sage Chakra said it wasn't enough. He needed Naruto's clone(Who had part of Hago's Chakra) and Sakura. Obito actually constantly stated, that just opening portal to dimension was an insane feat. We must factor in that anything Kaguya does is waay beyond that of an 10-Tailed Jinchuriki.
Sasuke's chakra must be Juubi level, if not, close.