Hello,
I'm new to this too so still learning lots.
My son is 7. Food that we give him outside of meals are Baby Bells, Cheese Strings and Pepperoni.
We also cut thick slices of cucumber and put a bit of cheese on top.
He takes his time over a cup of tea also.
I have raw carrot sticks and I let him have 1 or 2 strawberries as a 'free' too.
For after Hypos, we used to give 2 Rich Tea Biscuits (5.9G each) but he's already off these so we're now onto Party Rings (5G each)
Good luck with everything, remember we learn from those lows and your positivity will be challenged at times, but that's true with everything in life, yes? It's just another hurdle I guess.