Post Chemo Neuropathy Pain

My wife has had 2 surgeries: an emergency colostomy for an endometrial mass that blocked her descending colon at the sigmoid loop, and a successful reversal surgery 5 and a half months later to remove @ a third of her colon along with the mass which was believed to be benign based on blood tests. It wasn't. Cancer cells were detected in it and in 4 of 20 lymph nodes. This was April 4 of 2023. She was diagnosed with Peritoneal Cancer. After a long surgical recovery period, a PET Scan revealed the cancer had not spread, as was feared, but was still localized. She had had a complete hysterectomy 21 years ago, so no further surgery is believed to be necessary. The doctor downgraded her from Stage III to Stage II and she had her first Chemotherapy Treatment June 13. She is currently dealing with severe pain in her knees, ankles and feet. Chemo-induced Peripheral Neuropathy, (CIPN). Cold packs and over the counter pain medicines seem to help a little bit. Has anyone experienced this? How long a duration does this usually last? Anything seem to help ease the pain? We're thinking about calling her Oncologist Monday to see about a pain medication prescription. We have been "googling" and researching various websites. I was hoping to learn more from some firsthand knowledge. She is scheduled for 3 more Chemo Treatments followed by another PET Scan to see if she needs the remaining 2 of the 6-treatment regimen. From reading, it appears we can expect more of this after future treatments with an increase in pain.