what should be the treatments of a 29 yr old patient of IgA nephropathy with FSGS like changes in EM?

My brother 29 yr old presented with proteinurea > 1 gm /24 hours and BP 150/100. With all other investigation we also performed kidney biopsy which revealed IgA nephropathy and on EM revealed FSGS. He completed 6 months course of steroids, Valsartan with MMF 360 OD. At the end of 6 months 24 hr proteinurea was only 130mg. From last 8 months he is on MMF 360 and valsartan 80 mg OD. We monthly do 24 hrs protein  which fluctuates between 600 mg to 1200 mg.

KFT were performed frequently always within normal range. He also follows renal diet .. but little loosely. Are we going in right direction...? Are there any modifications required?