You're on the right track there John. Your immune system won't be suppressed during all of treatment, but its safest to assume the worst. You've probably already had briefings to avoid public places, be vigilant about food hygiene, have sick visitors stay away. We had a rule when the grandkids came over they had to use the "special soap" (hand sanitiser) before they could visit me.

You're probably talking to speech pathologists and dietitians as part of the treatment. Mine had me put a hold on vitamin supplements and the like, just to make the pharmacology simpler I think. You won't go wrong with fresh juices and won't need any other supplements. I would keep up the fresh juices as long as you're able.

Sounds like you're doing well. Just keep the hydration and nutrition up, and keep your medics up to date with new symptoms as they develop. You're just coming into the radiation symptoms, keep up the mouth washes and sorbolene the neck after treatments.