The disease that you describe is known as Steroid Dependent Nephrotic Syndrome. It is a very difficult kidney disease to treat. In some cases, it is necessary to perform a kidney biopsy in order to know exactly what the kidney looks like to make sure that a second disease has not occurred such as Focal and Segmental Glomerulosclerosis (FSGS). I suggest that you consult with a nephrologist in your country and determine if there are other treatments available for you and whether a kidney biopsy should be done. The alternative treatments for your disease are best done if you have a kidney biopsy to be sure of the exact diagnosis and pathology. I am unable to recommend medical treatment without performing a complete history and physical examination.