What can be done to soften cartilage grafts in alars of the nose? (Photo)

My revision rhinoplasty doctor added cartilage grafts into my alars bc he said my nostrils were too small. I am 7 months post opt and I can feel the cartilage grafts: they are stiff and very thick. It's effecting my breathing to the point where I have to wed snore guards/splints to open my airways so I can breath. I wear these 24/7. What can be done to soften these cartilage grafts in my alars? Can steroid shots help soften these grafts so they're not so thick and stiff?