This sounds sensible and doable. 9 to 5 or 10 to 6. The main point is no snacking ever! With 3 sensible meals without all the sugar products, there’s no craving to snack.
When people talk about intermittent fasting, which seems to be trending now, I always tune out. I think, I'm not sure I could do this, and even if I could, I wouldn't want to. But circadian rhythm fasting seems totally doable. I could restrict my eating to be from 10am to 6pm, though it would require some changes in my lifestyle.