I had my FUE, 4500 grafts done 9 months back in New Delhi. Advice about lifetime hair care for maintaining the results? (photos)

1.Is results ok? is it final results, or it can be improved. 2.i had PRP at the time of hair transplant. is more PRP required for better results. 3.I am taking tablet ANDROANAGEN since last 9 months. How long should i continue? 4.Which shampoo and oil is to be used now? 5.what should i do for getting lifelong good hairs? Recent pics are attached. Regards