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I am sorry Curran did not eat enough too get his insulin. However, two days is too long to go without it.
Try syringe feeding him human baby food chicken or turkey with no onion or garlic. Warm the food to bring out the aroma. You can also try tuna or canned cat food a bit warm.
As soon as he has enough food, give him his regular dose of insulin.
Please write back and let me know how he is doing.