If you can, try to eat as normally as possible. Check your blood sugar more frequently than usual, check your ketones if you get above 13 or experience symptoms of DKA (may be difficult to tell if you are sick, but watch out for nausea, vomiting, stomach pain, fruity smelling breath, rapid breathing). For hypo treatments I would recommend liquid as it's often easier to consume than solid foods - consider juice, or just some sugar in water. Get well soon