I did mine the same way - New Game + on Easy. Go into the Memories menu, choose Boss, then pick the first one (Aldovoss). You should do this as soon as you have control of Adol. The difference, however, is that I didn't dodge. I held the guard button (triangle) each time it started swinging and took zero damage each time then hit it in between. Since there's no time limit, I just took my time and smacked him between hits until he was stunned then I finished him off. Easy as pie. :)