None of us have had something like this. What if it goes wrong? What if your hand slips [Doubtful.] or it's waaaaay worse in there than you thought it was gonna be [Also doubtful.], or something else happens-

[Oh.

That's... it. There's a clear realization on his face as it hits him. It's because he's not in control here. This isn't something he can plan and manipulate the field to what he wants. He is entirely at the mercy of someone else for his health and medical need. He's going to be out in medically induced sleep and won't be able to even see what's happening, let alone be part of it or be able to take charge when he needs to, and that's really it.

He sighs, slumping a bit where he's laying.]

This isn't really something that can be fixed with talking. Just - knock me out, let's go.