This is really difficult stuff to deal with, physically and emotionally. Like @AllyJay, I was affected by taxol and feared for my ability to walk. I am OK, feet are still damaged but I can now walk without pain or difficulty (running is another matter!). However my mother had a lot of spinal damage (not cancer)which badly affected her legs, particularly her knees. The constant rejoinder from doctors and nurses was to keep walking as much as possible. Which is consistent with the advice you are getting. Perhaps best to check if a walker is acceptable instead of crutches, as anything that helps you walk more would be good. Very best wishes.
