no he just had to use Mahoraga
Mto adapt, Megumi to take the effects of Unlimited Void, Saved his heian era form as a back up plan along side saving Kamutoke as a back up plan, had to 3v1 him all along using his most potent form of domain expansion whilst simultaneously using Mahoraga the most op shikigami in the verse……..
remember when Sukuna had zero RCT, Zero CE Output and got blitzed by trashimo due to the after effects of being bodies so hard by Gojo then still feeling all those after effects til this very chapter….
cause of Gojo he is pushed this far..