as we age things change...your body becomes less efficient in some ways.

Elevated blood sugar in the morning is a response to a hypoglycemic event
while you are sleeping. The liver makes glucose when that feedback loop goes
off.

If you inject Lantus in the morning...then during the night it is wearing off, so naturally your sugars would be slightly up before the next shot.

If your A1c is good, that means OVERALL you are doing well. I think people may get overly obsessed with the process and try too hard to change things.

I think you are doing well, and that is all that matters for YOU.
This is why the ACCORD program changed suddenly...because for some people overly strict glucose control led to death (their bodies couldn't handle it).

An apple or a piece of cheese or some cottage cheese or yogurt would be a good night time snack. (not a sugar filled brownie).
Even a Glucerna bar may work for you. It is made with long acting slowly digested carbo. Buy one or two and try them? That will tell you alot right there.