My sons funeral

My son Shon Haggans was my twenty five year old son that suffered a heart attack and is currently brain dead and on life support. I have to make the hardest decision to take him off life support. I have no money to help for his funeral expenses. I sincerely need anyone's help with my sons funeral, I will be greatly appreciative. My son left behind a seven year old daughter and a seven year old son, and three brothers. He was a beautiful person and would do anything in the world for his family and anyone else. He was always making everyone laugh and everyone that new him loved him. Shon is currently still on life support and it is killing me to let him go, but I know I have to but I don't know how I am going to handle everything on my own.