i have 3 11 week old kits and only one eats wet food,they all eat go-cat and cat milk ive tried all sorts of wet,am useing Authers presently,same,only one eats it,and shes the smallest.though they are all small for there age,mom stopped nursing when they were 9 weeks old.ive even put down freshly cooked chicken and fish but they try to bury it...should i fret????