TAS, I can relate because I used to constantly think my T was judging me or be afraid that she would. It turned out I was very judgmental towards myself and I assumed she would feel the same way and just confirm that my negative judgments about myself were true, much like you were saying.

In reality a T's job is not to judge the client. If a T judged their client for not knowing something, they wouldn't be a very good T since their job is to help the client figure things out, not tell the client they are stupid. If this is a fear you have, hopefully you can ask him if he is judging you (I have had to ask that many, many times) and if you can look and see that there is no judgment in his face when he says no, I'm not judging you, then maybe that will help a little with the amount of fear you have.