You think you'll need his strength in case any pokemon tries to attack you. Snarfl Shouldn't think you're replacing him, this should be temporary.
Since he is under the weather Maybe you should make him a remedy that is easy on the stomach.
Or, since he saided just rest, just explore.
You had 62 Geo Pebbles from your exploration in meeting Grbawsw (He tried eating you and almost succeeded.(and he still does, but out of love now)), a dozen of Oran berries, 5 Pecha berries, and a rawst berry. You made sure to pack a few extra since Grbawsw Snacks.
So... You were a little packed, Grbawsw, Said to be named Hero, Shouldn't Eat you unless you run out of food, you told him to, or he wants you safe. Where shall you go?