There's a word for what you're doing, and that's not it

"Do you want to go to bed?"

"Okay."

"Or should we watch an episode of something first?"

"Yes."

"Are you even tired? Because I'm not. But it is 11 o'clock."

"Mm-hm."

"We could always go to bed and read for a bit."

"Okay."

"You're agreeing with everything I say!"

"I'm agreeable!"