I was on 1;9 ratio and tried 1:7 today but weirdly my numbers were the same after eating! I will try 1:5 tomorrow and go from there I think. I've been doing corrections afterwards but then it does go a bit too low.You could try changing your ratio. What is it at the moment? You might also find you need a slightly different ratio for different breakfasts. I do - weirdly I need less insulin for the same carb amount of croissants than cereal
My breakfast ratio is my highest ratio and always has been. In pregnancy, it was the breakfast ratio that was most affected by the later insulin resistance. I think many people find that.
I’d eat exactly the same breakfast tomorrow and try a slightly different ratio. Don’t jump up with your ratio, take it cautiously. Also, try it for 2 or 3 days before deciding whether it works or not. I found pregnancy a time of pretty constant change with insulin amounts.
Weirdly when I did my DAPHNE course, both myself and someone else commented on how cereal caused a massive spike! I now only have a small handful on yoghurt which doesn't have such a big impact or porridge which seems to work slower.