Is more frequent transfusions the answer for RARS-T?

Have you heard of the blood disorder called RARS-T (refractory anemia with ringed sideroblasts associated with marked thrombocytosis). It has the features of both myelodysplastic syndromes and myeloproliferative disorders. My husband is having transfusions every two weeks. His red blood count is very low and is getting worse. How long can he go on like this. Will he have transfusions closer together? Is that possible?