Anakin was making a mental check list, marking off everything Ahsoka was saying - grounding exercises were part of his daily routine, he already felt the Force - he couldn't get it to shut up, it was definitely existing around him. Yup, he could do this...
But then she got to 'accept it,' and his expression deadpanned. He sighed. He rubbed his eyes.
And then he said something he very rarely said, "I need caffeine."