Levemir - rapid rise?

Morning.
Been type 1 for 25 years, pretty good control. I have adjusted my levemir dosage(morning and evening ) a number of times with success and I know what works for my body and how to adjust.

Well I thought I knew. I was taking 18 at night (9pm) and 12 in the morning (6am) for ages with no issue. Then suddenly my bloods started rocketing in the night - before the dawn phase, around 1am. By 3am it would be 18 .

I have increased my levemir and whilst it’s brought it down , it’s still high. But what’s confusing me is I’m now on 26! That’s a increase of 8 units which seems a lot!! Have others had to increase dosage this much , this quickly?

Thanks for the detailed reply , much appreciated.

I have gone up this much incrementally over a week, I will raise it again tonight as it still went a little high. Although not as much.

Stressed somewhat, bad sleep yes , plus I was dealing with 3 hour jet lag. Although that was 2 weeks ago so I’m imaging I’m over it now. Plus, the travel lots for work , I have a somewhat stressful job and I’ve never been a great sleeper, so these aren’t new issues. And like I said. Whilst I have had to increase my dosages before I am just surprised it’s gone up so much in a week. This is my second batch of Levemir - I worried the first was bad - but same issue.

My levels are notably more spikey during the day for sure, which I’m guessing is linked. I’m correcting with nova rapid which works but is a pain and sometimes leads to hypos. I’m a healthy eater and on a low carb diet. Last night a had a halloumi salad with no carbs so I don’t think it’s that.

Ah interesting- yes I was wondering if I needed a change. I’ve been on this for at least 15 years. I’ll speak to my doctor. Thanks so much for the replies and making the connection