Now that DD is a teen and sleeping in, we have been able to really see how the Lantus shot she gets in the morning affects her blood sugars. On days she is sleeping in, I will briefly wake her to give her shot and then she sleeps on for a few more hours. For instance she rose from 200 at bedtime to 225 at 9 am, when I gave her the Lantus (we clearly needed to up her Lantus dose). So at 9 am I roused her briefly and gave her the day's Lantus - 16 units. At waking at 10:30 am she had fallen to 165, a drop of 60 points in an hour and a half due only to the onset of the Lantus peak.