Peter's not sure if he's capable enough to do this.

"Are you really going to let me do that?"

Let probably isn't the word he's looking for. Peter's by no means scrambling for the opportunity to stitch up someone else's back. Yeah, it might be a valuable life skill, but he was worried about screwing up and hurting Alec.

He's also pretty sure his stitches aren't going to look nearly as good as Alec's.