One of the biggest overlooked areas is fueling the immune system. many people juast try to drive it, which doesn't work well if it's under-fueled.
With cancer and lymph issues, I have always found Immunocal to be an excellent choice, 1 packet, 3x/day,
All conditions, including cancers are driven by inflammation. The Plan is excellent for helping to address these type of issues. Food choices are very important.
A phone consultation would be a good idea.