Yes, trial and error, really. I think you need to listen to what your body "feels" it wants, and it can change during treatment. In the early days on AC, I tended to go for very small amounts of muesli. Later on, it was pasta with olives, tomatoes & pesto - all sharp flavours that I could taste when nothing else had any real flavour. You don't say what you have been prescribed for nausea but I had Ativan - it's officially an anti-anxiety drug but it works brilliantly for nausea but it does make you sleep. Also Somac for reflux, later changed to Nexium.