Discontinuing TPF for BOT cancer

Buzz has had 2 rounds of TPF chemotherapy and has had severe side effects. He is in the hospital for the second time with low white cell counts, a respiratory infection, and severe electrolyte imbalances. The doctor has hinted we may need to stop chemo and not do round three. Has anyone had only two rounds of TPF chemo and can radiation therapy be done anyway without completing the full course?