Hi
MMS is an OXIDANT, Caffeine is an ANTIOXIDANT and one of the most powerful AntiOx so doing both cancels both out and neither work, and no ground is gained.
We know caffeine prevents/hinders healing not only by antioxidation but by jacking central nervous and sleep deprivation. (REM)
If you do use MMS in enema, do NOT use DMSO with it.
I have a few who have done Gerson and not completed or reached goal.
But it does work if adhered to. Same as MMS.
But I believe you will have to choose one or the other.
There are many, as many as 450 natural cures for Cancer I've been told. I know of 25 or so. Gerson being one of them, MMS another.
While I have not done Gerson personally I am here on G2C cause MMS actually does work, very quickly and inexpensively.
There are so many choices now, but be sure to learn about incompatibilities if using more than one approach/method.
I believe MMS is the fast most powerful treatment, but I do not know everything.
You could try alternating weekly between Gerson and MMS but doing together, in same day may not provide the results you seek given one cancels the other out.
All the Best whatever your choice.