It definitely takes some time to get comfortable and develop a rapport with a new T. I had been seeing the same T for 6 years, then switched to someone new 3 months ago. The first few sessions were a bit awkward--it was like we were feeling each other out. He seemed more stiff and reserved. The past month or so has felt much more comfortable, like he seems much more down to earth and he'll joke around with me a little (I think he first had to figure out if I'd be OK with that)--there's just more of an ease and comfort to the relationship. So I would give it some time. If, after, say 3-6 more sessions you still don't feel comfortable, then it could be that it's not a good fit with this T and you should find someone new.