I’m so sorry about what you and others are going through. My DH is on round 3 of colorectal cancer since this started in 2020, and we’ve learned a lot. Sorry for any repeat advice and this is a little late to help OP, but I wanted to post for posterity.
Enterade (https://enterade.com/)- supports the body through chemo. This is a super mega game changer. It’s expensive as you’re supposed to drink 2 per day, but it gave my DH his life back. First round of infusion this time was without, then I discovered Enterade and he’s had 4 more infusions since. None have been as bad as the first and usually the negative effects of chemo are cumulative. DH has been able to keep working full time, helping around the house, and working on his own hobby projects instead of mostly napping and feeling crummy.
THC- Again, super mega game changer. He doesn’t have to take the anti-nausea meds that cause constipation and still has an appetite for more than just chicken tenders (randomly his chemo-comfort food).
Eat something before infusions/radiation- The only times DH has gotten massively pukey have been whenhe didn’t eat before chemo or radiation. After learning this lesson 3 times, he is much better about forcing some oatmeal or crackers into his body even if he’s not hungry. Better than the migraines and puking.
So sorry for everyone who is going through a cancer journey. It’s not a good time, but similar to others, I expected the chemo portion to be dramatically worse than it ended up being. Still not a good time, but with the supports listed above, our household is able to function almost normally during his treatments.