Morgan
There are no absolute answers and I cannot give advice beyond read round the subject, search your own prognosis and talk to your medical advisers.
Often trials simply have not been done.
There is a post on articles of interest on DHA intake in general terms.
http://www.ncbi.nlm.nih.gov/ is useful. You can enter your search terms and it will pull up the trials.
This has some useful links on diet.
http://her2support.org/vbulletin/sho...ght=greek+diet
and this to
http://her2support.org/vbulletin/sho...st+cancer+diet
I am sorry I cannot be more specific.
RB