I agree with you...it's his mid-section that concerns me the most, especially for infection. Don't try to make him move yet (to test for paralysis), that has to hurt.
He's so tiny & yes, so cute! Is he moving around voluntarily at all? If not, I'd offer him drinks of water from a spoon or jar lid, to make sure he's not hurting too much
to go & drink on his own. I wouldn't offer food for several days at least to give time to heal, based on what I see so far...obviously I don't know his activity level yet.
How he responds will be telling. Let him rest, not too warm, gently treat topically any wounds w/ antiseptic (as previously posted) & cross your fingers. Handle as little
as possible.
I'm not sure how often these eat, but I agree, probably at least once a week. When you do feed him, I'd feed on the small side first, see how he tolerates it, or IF he
even eats at all?You'll get an idea if he's willing to eat by the way he flicks his tongue, also. Being "interested" is the sign to look for.