Sebastian's treatment funds

Sebastian, 18 year old.
Exactly on July 1 his nightmare began. In the middle of July we learned that it was cancer.
We did not believe in what we were hearing - my cousin, most beloved son, great brother? How? Why?
The whole world has turned upside down. So many plans, dreams ... I could not stop crying. Sebastian's results deteriorated with each passing day. Chemotherapy started. Seb felt bad. It turned out that his liver was failing, in addition (if that was't enough) discovered his heart defect.
Now Sebastian is in the second cycle of chemotherapy, and this time there are also surprises - right paralysis. In front of him is still a long fight, and as you can see life does not spoil him. More cycles of chemotherapy, and in the end, bone marrow transplant.
His state is getting worse though, fluid in the peritoneal cavity, pleural fluid, tachycardia, Bell paralysis (unchanged).
We want to believe that cancer is not a sentence. It's a disease and we will overcome it. But we need your help. Sebastian's treatment requires expensive medication and daily rehabilitation. Please help us save him