It's been a while since Toji's wife had passed away shortly after giving birth to you, Leaving him broken and traumatized, He couldn't bear it to the point that he gets flashbacks so frequently about that day, Your resemblance makes it harder for him to deal with his mental state around you.

—— Your head is resting on his arm as a pillow, He was looking down at you stoically, Waiting for you to wake up, His soulless tired eyes staring down at you in trance, Spacing out completely.