Should I leave it alone or keep it?

In the story The Experiments I started reformatting the chapters from chapter 10 onward to fit 1st person point of view instead of flipping from 1st person to 3rd person point of view. I wanted the story from chapter 10 onward to have a more personal feel from the different points of view. It's still having an adventure dark theme to the story. I was thinking about maybe going back to the earlier chapters and reformat them so they match the rest of the story or should I just keep what I have because people have already read it?

It's only in chapters 3 through 9 that flip from 1st person to 3rd person viewpoint.