How to stop enemas and feel ok

I've been doing about three coffee enemas a day, for about a year, since going to the Gerson clinic to help heal the brain tumor (GBM) I've been healing from for two years. The Gerson method has helped tremendously. Particular the coffee enemas, which are done with Wilson's organic coffee. I take 32 oz. of the coffee boiled the gerson way, morning , mid day, and evening and in the morning I don't feel very well till after the enema.

I'm a bit nervous, as I will be going on my dream vacation, to Egypt on a boat trip down the Nile. I will be gone ten days, and don't see any way of continuing the enemas while I'm away. I am almost out of coffee, so even if I could make it on the ship, I'm out of coffee and it's too late for it to get here if I order it now.

My question is, am I going to feel a negative difference? I do still have natural bowel movements, and I drink caffeine in the form of green tea. I've tapered the enemas down to one per day, and I'll probably be ok, but if anyone has words of advice, I'd love to hear them.

Many thanks.