This sounds like a difficult clinical problem to work through, but one that is necessary to address. It is true that the dawn phenomenon is responsible for increased insulin requirements during the early am hours (3:00 am – 6:00 am). It may be that you can change the timing of your injection, the dose of the insulin, the insulin regimen itself, or use an insulin pump which can be variably adjusted to your requirements as appropriate treatment for the problem.
I do not have a good explanation for the reason for your recent change. I empathize with you about the problems and frustrations you are having. I would recommend discussing this as well as a comprehensive approach to its treatment with your physician. There may be issues related to other medications, foods, or other medical conditions which need to be explored.
JTL
[Editor’s comment: I have a few additional suggestions:
Your situation might well be clarified by monitoring sugar levels continuously for several days to try to sort out what’s happening in more detail. See The Continuous Glucose Monitoring System.
If this has not previously been a problem, it may be that you have some “bad” insulin. I would suggest getting a fresh bottle (with a different lot number) and seeing if this makes a difference after three to four days.
Have you explored current stressors in your life? Stress of any sort, either “good” or “bad”, may be the culprit.
SS]
