Hi Hollieo4,
I had some weeks where I needed to take 16u of basal a day, and my carb ratios for breakfast, lunch and dinner were 1u:6g, 1:3, 1:8. I had other weeks where I needed 8u of basal, and my ratios were 1:10, 1:17, 1:18, despite eating and exercising similarly. And everything in between. No pattern. It was ridiculous.
In the first case that would have been about 65 units a day. In the second case it would have been about 25u a day.
Thankfully things aren't too bad at the moment. But sometimes it happens and it makes it **** hard to function.