Hi again, Mike,
I wanted to get this out there so you would see it before shot time. After thinking about it, and discussing it with a couple of other people who are much more familiar with Lantus that I am, here's what I'm thinking...
The Tight Regulation protocol, if that is what you're trying to follow, would indicate a reduction of .25u, so tonight it would call for a dose of 1.25
One important thing to keep in mind no matter what you shoot is how Lantus works. It is called a "depot" type insulin and it has a cumulative nature, where each dose builds upon the previous dose and forms what we refer to as the "shed". Because of that, when you reduce the dose, the depot is still there, so you might not see the results of a reduction immediately. It might take a day or longer for BJ to adjust to the lower dose. I guess what I'm trying to say is that even if you shoot less tonight, you could see the same thing you saw today happen again tonight. What that means is that you need to be prepared for that, so if it does happen, you see it coming early.
To some extent whether or not or how much you can monitor his numbers overnight will play a part in how much you want to shoot. But no matter how much you give tonight, you should monitor. That doesn't mean you need to stay up all night. If you test him at +2 and +3, if he's going to drop quick or far, you should be able to tell by 3 hours after the shot. Do you have gravy/higher carb canned food, test strips, and can you stay up or set an alarm to check his BG a few times in the first 2-3 hours of the cycle?
You can shoot 1u if you choose to. Actually, keep in mind that it is always your decision because as we always say "you hold the needle". We advise, you decide, to paraphrase Fox News! It all comes down to your level of comfort when it comes to dosing. You can shoot 1.25, 1u, .75, .5 or even skip the shot (although I wouldn't recommend skipping on any number over 200).
If you test him about half an hour before midnight, and then again at midnight, you'll have a better idea what to do. If his number is rising, it would be okay to give him some insulin, but you will need to get spot checks overnight. Maybe at +2 and +3. If you don't see a big drop by then, maybe set the alarm for +6?
If you decide to skip the shot altogether tonight, you can do that. Without more insulin, and assuming his numbers are up in the 200-300 range at shot time, he won't drop low overnight.
Tomorrow, it might be a good idea to start posting in the Lantus Tight Regulation forum. Most of the people who have been helping out today spend most of their time there. Lots of other people there can also give you great advice. It's the busiest forum on the board, and somebody is usually there 24/7. It's the best place to post if you need a quick reply.
Carl