(Searching for) Parental Hulk
I'm searching for a fanfic where Tony was sleep-deprived (and maybe starved)
and Hulk decided to take care of Tony and started babying him. Ex, feeding him with a bottle until his stomach hurts, putting a diaper on him, there was a line about smearing rash cream, giving him a bath, putting him in a onesie, swaddling him, and rocking him to sleep. Then it all stopped (I forgot the reason why) and Tony was sad because he missed it but didn't know how to express that.
I think that it was on A03 but I'm not sure