Gail, do you have any data to know if you have insulin resistance or not? Most T2's do.
If so, your ICR is probably between 1:4 - 1:8, and your CF is probably in the 1:10 - 1:20 range.
I'm 1:4 in my carb ratio, and 1:10 in my correction factor. I'm on a pump now, but back when I started insulin last June, I was doing MDI using lantus for a basal (which I really don't need), and humalog for bolusing. For comparison, I was taking 40U of lantus at bedtime, and it didn't really seem to make any difference whether I took it or not. With IR, that relatively low-level of background insulin (40/24 = 1.67U/hr) didn't seem to dent the blood sugars.
The only thing that does, for me, is fast-acting insulin, calculated and bolused based on the correction I need. THAT is very reliable.
Also, I seem to have a wicked Dawn Phenomena. Because I have a pump, I have a basal rate program that goes from 0.05U/hr to 4U/hr starting at 2:30AM, then drops back to 0.05U/hr at 9AM. This wiped out DP, and I wake up with BG in the 90s. Often, depending on how my BG is tracking, I'll stop the high rate basal before 9.
So, this may be an issue with DP, and there's little control you can have over it without fast-acting insulin. Trying to compensate for DP with Lantus is like trying to hit one nail among many on a board with surfboard. The resolution's too poor.
That's not to say the Lantus won't help at all, but you also have to watch some other things that affect DP:
- Do not eat late -- eat around normal dinner time.
- Eat light for dinner, low-carb, low-cal overall.
- Get in some light exercise after dinner when possible -- nothing more than just a nice evening walk or something.
- Take the Lantus even if your BG is borderline before bed (70-80). Have a very modest, well quantified snack (like a graham cracker) to get a little something flowing in slowly from your stomach while you sleep.
- If BG over 100 at bed, do not have a snack!
As a T2 -- and one not as far along as me in beta cell exhaustion -- your pancreas can probably handle holding your BG level, so what you really need is a way to get it back down there as fast as possible, and with repeatable certainty. There are three words that fit that bill: Humalog, Novolog, Apidra.
You've already stepped over that line of taking injections -- the psychological hard part's over. Talk to your doc about starting a regimen of correction bolusing when neccessary.