Sometimes, I still go through the "what's going to taste good today" routine. For me the cooking smells set the tone. On several occasions I had my wife stop cooking (even microwaving) due to the smell as I wouldn't eat it when finished. I have found out some of my favorites before chemo are barely tolerable still (chicken breast is one). My ONC says calories count, even the not so healthy ones when weight an appetite are an issue. During my worst days, ice cream, crackers, tuna, banana, salad, some cereals, pasta, nuts, raw veggies, and turkey were my goto. Luckily, my smell and taste have improved after stopping Folfox (even being on Folfiri now) and pretty much eat anything again.
Before dinner prep starts, somedays I do request something else or just fend for my self when something doesn't sound good. I still go through taste swings every once in awhile. Today veggies are great, next week no thanks. Same for meats, nuts, fruits, etc. We try to have several options on hand (including frozen) and a lot of times just the simple act of my wife mentioning 2-3 things will run across something that sounds good and is tasty.
P.S. With the mouth sores, if he's using the magic mouth wash that may affect his taste for the good or bad depending and how close to a meal he's using it.
56yo male DX 5/15/17, Right Hemi colectomy 6/17
mod diff adenocarcinoma 5.8 x 3.9 x .7cm
3c (T3 N2b M0) 12 of 21 pos
Folfox 7/17-12/17 (no Oxi round 9-12)
12/17 CT=liver/lung mets-Folfox failed Stage 4
MSS KRAS G13D
2/18 PET=liver doubled to 8.5cm +new lesion, lung mets 1.4cm, multi peri./omen. implants
2/18 Folfiri + Avastin (no 5FU after C2)
4/18 PET=liver/lung/implants shrinking and uptake reduced
CEA 5/17-16.2, 12/17-16.1, 02/18-43.0, 3/18-16.9, 4/18-9.0, 5/18-7.2 + 5.5, 6/18-6.4 + 6.9