I've been doing IF for probably 9 or 10 years now. I never feel hungry for breakfast, and would normally eat around 1 or 2pm. This felt/feels very natural to me.
However, I've been surprised while reading Peter Attia's book Outlive, that there are very few fasting studies that show benefits in humans.
I'm reconsidering my approach, though in reality, I'll probably still skip breakfast and just focus on ensuring I get adequate protein, which I probably wasn't.
But just for your information that's not what this article is implying, neuronal autophagy may sound scary (it sounded to me when reading the title) but is considered beneficial.
If your desire to change ways does not stem from this study where does it come from? If it feels natural to you and you have been doing it a long time I don't see the point.
And if you are worried about protein absorption/usage by the body I'm confident there were studies showing that while eating fast digesting protein like whey the proper usage by the body was limited to about 20g this effect went away when consuming slow digesting protein or fast protein in one or two big, slow to digest meals.