Please, Inigo is fine over here.

.. okay, so maybe he's being a little grumpy, but he's physically fine, especially since he's still just sitting there. He sure isn't going to put up a protest if Taiki decides to rest first - it might even be better for him.

But he's still not speaking up. And even aside from that, he realises that it's very much Taiki's own choice. The other is responsible enough to look after himself and his own health.