hello jonny12,
The not enough insulin explanation
The most obvious reason for your son waking up with high sugar in the morning
will be not enough basal insulin(lantus) during the night. This is solved with extra
lantus the evening before.
The too much insulin explanation(SOMOGYI EFFECT)
If your son's sugar has dropped too low at any point during the night, then his
body's reaction to this low sugar level will be to overcorrect and send his sugars high.
It's more common to wake during nightime hypos, due to the hormones involved in
the body's reaction to low blood sugar, but, in this instance, we're assuming that the
hypo has been slept through.
This is solved with less basal insulin the evening before or a snack (slow-acting
carbohydrate if possible) before bedtime.
Information overload
Just to make things even more confusing, there's "dawn phenomenon", which can
also have an effect on morning blood sugars. The link below will expain it and tell
you how to deal with it's effects.
:arrow:
THE THEORY OF DAWN PHENOMENON
All the best,
timo.