I was due for 12 sessions of Taxol and started getting peripheral neuropathy in about week 7. I spoke to the nurses and to the breast care nurse, they just said to keep an eye on it. However, I was getting concerned, so I rescheduled my onc appt to be before the 10th treatment instead of just after it. She stopped the treatment right then and I only did 9 of the 12. I was delighted!
Now, five months later the numbness has eased but it is still present. There is no clear benchmark about peripheral neuropathy, and the damage can be permanent. So, speak up and keep speaking up. Perhaps you could take the approach that you are likely to have your current numbness for months or even years.