B cell acute lymphoblastic leukemia

Hi my name isa Anna i create a campaign fund for my nephew RAIZEN SAI C. BAYZA he is only 4 years old diagnose for b cell acute lymphoblastic leukemia..every week he is having a chemotherapy and inject of anesthesia it is almost 2months he diagnose by that sickness..i am so pity on him ? because now the doctors said he is having water on his head...?? i am knocking of your kind and helpful heart to please help my nephew