Jeff, I’d consider putting your kitten with your sons. With all the things that have been tried to get this kitten to eat, it may now be thoroughly frightened. The kitten may not know how to lap up food. Its sibling’s actions may well cause imitative behavior, which is what you want. If you take the kitten to your sons, to imitate its littermates, I think it may be the most positive way to encourage eating.
High-quality wet food, offered on a plate, not a bowl, with KMR mashed in loosely all over it, can often get a kitten to eat. Don’t worry if the kitten goes tromping through the food, and ends up wearing a lot of it. The kitten can always be cleaned up later.
If the kitten is growing listless or dehydrated, take it to the vet; two days of not eating can send a tiny kitten downhill pretty quickly.
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