bino,
The Hb of the child is far too low. This will adversely affect the growth and the development of the child, including development of bones, which will begin to expand and cause changes to the skeletal structure, especially the skull and face, resulting in the defects thalassemia was long known for. The solution is regular transfusions. I know making that decision is not easy, but your child will do so much better and will have a chance to grow and develop, looking like other kids. The bones will be stronger and far less likely to fracture. Hb should be kept above 9.5-10. Once you see that growth is not normal, it is time to intercede with transfusions.
We are here to help advise you. There is a lot to learn about chelation and eventually iron chelation, which can now be accomplished with oral medications. Many countries have dedicated thal treatment centers. Where are you located?