Yes, the idea is to feed to slow the drop by feeding earlier in the cycle - flatten the curve. We've seen that he can be flat at +2 and then dive at +3 and +4. I know that he has had a different food routine all his life and he might want food when his siblings are being fed, but you want to feed in the first part of the cycle when the insulin action is strongest and can counteract the carbs. You can always feed him tinier snacks of lower carbs at +5.25 and +8 when his siblings get food.