Waking high is a common problem. I call it Darn Phenomenon (DP). It is hard to know whether Lantus will help. In either case, you are insulin resistant, so if you are not already on Metformin, you should talk to your doctor about it. There are other things you can do for DP. Bernstein suggests setting your alarm for 3-4 am, testing and taking a correction bolus (of Novolog). You could also simply test and correct upon waking. You also might consider taking NPH at night to stack insulin overnight to offset the DP.