The problem with conventional cancer treatment is that it kills not only cancer cells, but also the patient. But you have a good idea to reduce the number of drugs at the same time with good efficiency.
As far as I know, chemotherapy kills a person, greatly undermining his immunity and overall health, it would be great to advance so much that chemotherapy can be ruled out almost completely, it would be a giant breakthrough!
As they say, better the devil you know. One of advantages of this method is that they use only 10% of normal dose, so the patient doesn't get bad side effects.