They Need to Eat Every Two to Three Hours
If you are bottle-feeding kittens, they should be placed with their stomachs down—not on their backs—to simulate a natural nursing position and decrease risk of aspiration, Simpson says. Kittens start to eat solid food at 3 to 4 weeks old.
Kittens who are not getting enough food could have low blood sugar, which can be life threatening, warns Dr. Renee Rucinsky, a board certified feline specialist at the Mid Atlantic Cat Hospital in Queenstown, Maryland. Hypoglycemia is a major concern with kittens, particularly it they have been orphaned, she says.