My son always goes way too low if given insulin with lunch. He is usually is usually 98 to 110 before lunch and usually eats 30 but less than 40 carbs for lunch. He naps after lunch for approx 2 hours. If he was given any insulin at all he will go low during his nap. If we don't give insulin he might spike to 190 but comes down by the time he awakes. He gets Levemir in the morning. I'm looking for insight on how and why it happens like this. Thanks. Adding we are using the dexcom now.