Can you recommend procedures to increase volume of the hair or generate a hair growth from all the potential hair follicles?

I am planning to have FUE hair transplant in a year or so to improve my hair line. But, my concern is that I already have thin hair (less hair volume) and I am worried about getting it more thinner, since the hair grafts will be removed, where there will be no hair growth. I have been going through a minor hair fall for quite a period of time and I would love to know the procedures that would cease the hair fall, strengthen/thickens hair, generate hair growth, and give volume to my hair.