Don't worry about not feeling communicative Emerald. <3 I wasn't during chemo either. After my fourth cycle I was just really mentally vague which is not like me at all.Walking into a room and forgetting why, that kind of thing.
I think the emotional effects kind of catch up to you as well. I remember feeling both tired and fed up like everything was overwhelming so I turned it inward and shut down a bit. Again- not like me but I think it's the toll chemo takes on the brain & body adding up.
If you're doing docetaxel+ cyclophosphoramide you've maybe got only one cycle to go after this? You're nearly there. Keep on trucking. It gets better, especially once you're a few months post active treatment.