Face shrunken 3 months after PRP - will the results ware off?

I had one session of PRP injections three months ago, mainly for a bit of volume and lift to the lower face, but now my skin has tightened so drastically that my chin has shrunk and my face looks unproportionally smaller. I already had a thin face to begin with so I am very unhappy with the results. Can I expect these results to wear off over a few months and my face to return back to its original proportions? How long should it take? I am 43 years old.