Kaika, therapy isn't easy, and it takes work. Some of the work is exactly what you are experiencing now. CBT is especially difficult and requires a great amount of effort on your part. There's a lot of dissatisfaction along the way because you need to change some things and thinkings, and you don't see why you should or maybe refuse to, that you don't agree with the T in the first place. It could just be natural resistance to therapy, you know?
Only a few sessions? My lands sweetheart, you haven't even had time to talk basics much more develop a trusting relationship with the T. You simply must try harder, imo. I think your T agreeing that you hadn't "gotten" anywhere might have been her attempt to side with you to help you feel as though you can heal?
No, it's too soon to quit, imo. Why not decide to try and work at therapy for another 6 months and then evaluate? Keep a journal and then you'll have your own idea of how much you've changed then.