I wouldn’t do anything, I got a pastel just like that in worse shape than that. Put him/her in a good tank with plenty of water and I kept the humidity at 70%ish when he went into blue and everything went well on his first shed and he was perfect the second shed. Sometimes it’s best to let nature take care of itself and not stress the snake.
Then if he doesn’t shed right u can intervene. But with the right care he should bounce right back and less stress this way