Is a hairline reduction still possible if a have scar tissue? And if so, at what time?

Hairline lowering after FUE hair transplant? Had my first hair transplant one year ago To lower my hairline. Ended up with scarring in my hairline. Had a new one at another clinic to fill it in 3 Months ago. I feel my skin rising. 2 stiff bumps are forming underneath my skin and i feel my skin is rising. Scared that i might have hyperfibrotic healing. Is a hairline reduction still possible if a have scar tissue? And if so, at what time?