I would just leave him for now, he does not seem to have any tissue loss, which is always the worst, sometimes they will bleach a little bit getting adjusted to a new light scheme, but most of the time it is not that big of a deal in the long run. Yours looks very minor. I would just monitor him closely for the next few days, and if it seems to be getting worse, you can move him in a little more shaded area. But usually the minor bleaching is short term.