We had the same issue regarding the basal. It seemed as if everyday she needed a new set of basals. There'd be nights I'd set a -20% temp for the night and she'd be perfect. Other nights, it was still too much basal, or not enough. Seemed as if I'd have to be basal testing like every other day. Regarding the juice boxes, we use either the 4oz fruitables (around 9g) or capri sun roaring waters (8g) Sometimes though if I have a bottle of juice, I'll just put it in a cup with a straw and that works fine too. Plus she'll need less of regular juice since it has so much more sugar than the fruitables and roaring waters.