The fact that the IgM did not rise on schedule and waited until June shows that something is working, even though you have stopped taking oleander intermittently.
My guess is that you are increasing the oleander dosage too fast. There should be no need to bite the bullet. If you experience stomach discomfort and diarrhea, wait until it passes to go to the next dose. Some people need to increase little by little.
Besides the Oleander, I would urge you to follow the rest of the protocol, and the liver cleanse, although it can be unpleasant is a very important part. This will help your liver not be overburdened by the toxins flushed out by oleander.
I am glad that you are sticking to a healthy diet, but try to incorporate more of the supplements on the protocol, such as Inositol/IP6, curcumin, colloidal silver, black cumin oil, CoQ10, and you should really go down the list. Fight this disease with all you've got.
For your type of cancer, I would also strongly suggest the Blood Supportby Jon Barron mentioned in the protocol.
Please do keep in touch as to your progress. I would consider it a win that the IgM antibodies have taken longer to increase. But tackle this disease in full force and effect without leaving one stone unturned.