Just take things steady, lttle baby steps is the key.
I have a nervy BC too, i try not to take her out of her comfort zone, so she still feels able to cope with life, and doesnt get stressed, giving her confidence by keeping her happy means we can progress little by little, although still more reactive than the avergage doglet she is getting there slowly.
Puts a smile on your face when they start to come good though, welldone, keep up the good work
xx

__________________
Sarah xxx