I have 5, 5 week old kittens. 4 of them have figured out how to eat the kitten food in the last week or so....(I had them get the hang of it by putting a mushy piece in their mouth) It didn't take long before they got the hang of it. Problem is, the one refuses to eat the food, she spits it out....I've tried playing with some of the pieces with her, she'll get it in her mouth that way, but then spits it right out. Will she eventually learn on her own? Or does anyone have any tips?