Threepio was glad to have Anakin back. He was much better at the human father-child bonding rituals than Threepio was. Which didn't hurt Threepio's pride in the slightest. Not at all. He wasn't made for this kind of labor and care. So it came to no surprise to him at all that he wouldn't be very good at it.
Threepio reached out and took the floating formula. Floating. The Force. It reminded him of his magical abilities on the moon of Endor. Oh, there were so many things he didn't know he had in him.
But he was pretty sure childrearing wasn't one of them.