Nah he def needed to wait until Maho showed him the golden path
that ability to adapt is broken as hell, every fight essentially just becomes "stall until Mahoraga gives me the cheat sheet
" if Megumi ever regains control he'll be unstoppable, he's seeing all of this in 12k
typically in shounen, that adaptability is given to the protagonist because it's so cheap
I feel like since Yuji's abilities (either the soul swap or the memory manipulation) are so cerebral, they'd counter Sukuna pretty quickly, the issue would be surviving long enough to hit him with it
I wonder if Gojo (off panel of course) told Yuji to watch Sukuna during the fight, since he potentially copied his CT after being his host for so long