I was able for a few months this year to not take corrections as they always landed me on the verge of or hypo no matter how small. If I left it it would reasonably correct overnight. It was put down to honeymoon at the time which I agree with. I'm now able to take small corrections at higher (double) figures and know roughly where I'll end up. It fits with my insulin sensitivity factor which I calculated.
I had to try taking 0.5 unit to see what that lowered me by until I cautiously tried 1 unit and I've been able to use the correction factor since. It's not hugely precise as I think I'm fairly insulin sensitive.
Just my two pence of my own experience.