Hi Mungolina.
My father was told to use Erbitrux by a doctor in India. I believe that if his initial treatment was Erbitrux he would have survived. A lot of people has had positive reactions to it and has given them much longer survival rates.
He was told to do it once a week for 3 months as well. and likewise, chemo once in 3 weeks with 5 days hospitalization. You are on the right track!
Only prob is erbitrux is that it causes neck and shoulder pain ( especially right side). so make sure you apply balms and heating pads, ice packs etc to deal with that pain.
I wish you all the best in your treatment. keep fighting! believing that you will come out of it and that fighting spirit is what will get you out of it