how the heck do i do this? i talked to biscotti, i read the wiki; they say to open the sprite tab in arsenal and click on the sprite's icon. when i do this i get the option to unequip and rename, nothing about feeding. the wiki shows an image of where you slot in a material to feed, i'm not seeing this anywhere in game. and how do you tell which material or food is preferred? not seeing anything there either. pretty sure this isn't an issue of no appetite, i ran through the clockworks before trying to feed this thing. any help is appreciated.
Hit the p button at the bottom (the one you use to look at your armor). Hit the sprite tab. It should have the screen you're looking for there, if not click the picture of the sprite in the column with its harness and abilities. Your arsenal should come up, and whatever mat you click will become the selected food to feed it. That screen will also show you it's preferred food (though at the moment 5* mats are much more effective and you should only use the special sprite food when leveling up)