[ truthfully, bones is fond of chekov. he is fond of children and young adults in general, but it's because of this fondness that he dislikes the thought of chekov as technically a soldier and doing work in such a godforsaken place as space, being so young as he is. he doesn't approve of space, much less young kids on there.

so, really, it's not chekov at all.

he's impressed at chekov's early arrival, although he probably should have expected as much. ]

Sit down, Mr. Chekov. [ he motions for the chair closest to his desk, after they've done their greetings outside of the doctor's office. ] This is going to be a bit different from the usual medical procedure at Starfleet, but just sit still and follow my orders, alright?

[ so he does all the basic stuff - checking his eyes with the light, pulling out his tongue to check his tonsils, checking his pulse, and all those things. these are things he knows how to do despite not having the technology for it. ]