Induction Chemo?

My partner had his first round of induction chemo last Monday (TPF with the 5 day 5FU pump that finished Saturday pm) He was sailing along Monday - Thursday last week but has been really sick ever since Friday. I can’t get him to consume enough calories and he just wants to sleep most of the time. We have gone in for hydration infusions 4 times and are going in tomorrow to have him evaluated by the N.P. Wondering if anyone else who went through induction chemo has words of advice for how to get through this and when he might start feeling better?  It’s overwhelming to imagine him going through this 2 more times.....and then radiation after that. I’m very worried and heartsick over his suffering.