Help 11-Years-Old Boy Fight Thalassemia Major

My name is Gumansingh Chauhan I live in Surat with my wife and 3 children. We were more than happy when khimsingh was born. We were happy small family , I work as salesman in a textile industry with very low income of 14,000-/ INR per month but still we managed our daily expenses anyhow.
That was a day of apocalypse for our family when our son diagnosed with "Thalassemia Major" he was just 5 months old at that time . My whole family was in shock and couldn't believe what just happened. We started his treatment immediately in which blood transfusion on every certain interval of time is required. Till now he had 130+ Blood transfusions. With every single transfusion ferritin  level goes up which is to be controlled by certain medication. Right now he is having ferritin level of 693.8 .
We came to know about Bone marrow transplantation which can cure this disease permanently .We came Ahmadabad in CIMS Hospital where we met  "Dr. Deepa Trivedi" who's pediatric Hematologist Oncologist there. She adviced us to have HLA typing test within the family first , With god's grace his bone marrow got fully matched with his sister "Heena Chauhan" . We were more than happy but the cost is too high for this operation which is next to impossible for me to arrange. Doctor gave estimation of "9,00,000/- INR" .  We've somehow managed sum of INR 2,50,000/- from CM fund and other sources but we still need a huge amount to get this operation done.
I'm her to ask you for your support to save my son's life. I would be highly obliged if you can help me in this. even the smallest of help will be like  blessings to me. Please come forward and help my son so he can live his life healthy.