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As a disclaimer, I have no experience with Intuniv. But sometimes when you are starting out with long-acting medications like Intuniv, you find that they wear off too soon at low doses. So there's a chance that it's wearing off a couple hours too early in the morning at 1 mg and waking your son up. So if you go up in dose, that might not happen. This is all my guess, but I suggest you give the dose increase a try to see what happens. You can always stop the medication if it doesn't work out.
