Hi,
Our daughter was also diagnosed at 2yrs and we straight to pump and CGM as we have quite a volatile presentation, but it sounds like your little one is okay with MDI.
I can relate re the sweets, we have a constant supply of sour patch fizzy sweets in stock. The fruit yoyo winders are a good option sometimes too as are fresh strawberries or grapes.
For overnight hypo's we use half a bottle of glucojuice aka lift, as she can drink it in a semi sleepy state so she's not disturbed too much. It's so concentrated that it doesn't fill her bladder too much either.
Not sure what else I can advise on given your own personal experience of T1, but happy to try and help if you have any other questions.
All the best.