"I don't know what I'm supposed to feel," Cole admits, with a little frown. "But I don't feel different."

But if 9S thinks that they haven't taken enough, then they might not have taken enough. After all, 9S has done this before. He knows what to do. But Rita says they might not notice it right away and Rita also knows what to do. There's an awkward pause, while Cole mulls over what to do next. The dilemma is solved as Cole takes another small little hit from the joint before he offers it back to 9S. There we go! A teeny bit more.