So sorry you are going through this, it’s a very tough journey. Wishing you lots and lots of good luck. Be sure to check out our topic for the newly diagnosed.
What protocol are you going to be treated under (SIOPEN or COG?)
I guess my only bit of advice here is be sure to run through whatever plans you have with your oncology team. Certain supplements can be very very risky when you are during chemo, things like probiotics must be avoided and so on.
For us, we were just super happy when Shalev was eating, we were not that picky about what, for many of the days I would be ecstatic if he had an ice cream or some hot chips.