He just woke up from his nap.. now the little monster is running around eating everything he can! (Man, I've missed him

) I'm afraid to feed him because I don't want to upset his tummy but I think eating everything off the floor (I've done my best to get it all clean) will upset his tummy even MORE! What to do?
Here are some what I like to call "after-parvo" pics!
PS. Now he's barking at me because I'm not paying attention to him.