Welcome to the community @dprkforum!
There’s a thread to introduce yourself if you are interested in telling us something about yourself.
I just wanted to say that I agree.
While B2B does not go into sight reading the course provides you with everything you need to start practicing sight reading. So If you feel that the theory part of B2B itself is not enough then you can add the theory lessons but… the theory is there in B2B - at least for the most common things about notation.
Sight reading is something you “just” have to practice anyway.