Medicine enquiry. The dose of teyoges!

My father ,aged 59, was diagnosed with Pancreatic Cancer on July, 2023, following EUS-FNAC & ERCP surgery. He is also a Type-2 Diabetic pt. On July, 2023, he underwent Whipple surgery as part of his treatment. Post-surgery, he received six months of chemo, which consisted of Gemcitabine and Capecitabine. The chemo regimen involved Gem. administered in 6 cycles, each comprising three sessions per week. Cap. was taken once in the morning and twice at night for 14 consecutive days, followed by a seven-day break. The chemo  concluded on February, 2024. A PET scan revealed metastases to the lungs and liver and underwent liver biopsy.The doctor has advised Teyoges 20mg two times for 21 days with 7 days off, and this cycle is to be continued.Additionally, the patient has received the first dose of Oxaliplatin 150mg on 27th March, with another chemo session scheduled after 3 weeks. currently pt. is too week, having body pain and loss of appetite. can we reduce the dose of teyoges