How do آپ think Peeta changed after almost recovering the Hi-jacking?

Yes. Part of it probably came back on its own. And I don't know if آپ caught because i didn't the first time i read the series Prim suggests Hijacking him back. To twist his memories back to what they really are.

سے طرف کی remembering all of the good thing that they did for him

I think that it made him مزید cautious and aware, not so much the sweet, gentle Peeta that loved Katniss مزید that anything in the world. I think that he also might be seeing مزید things the way that they are :)

I think he changed because he would never be the same.