While it may take a little time to get into it, many experience mental clarity, while on the other hand eating, especially lots of carbs, can make you rather sluggish.
The fasting schedule is really up to you though. Maybe it works for you to eat 7am to 3pm. Or maybe you do two OMAD days on the weekends. However, it’s a lot tougher, and more stressful for the body, to jump into a longer fast right away. Especially if you see this to be a challenge to fit into your life, maybe change one habit at a time. Maybe skip dinner, maybe skip breakfast. I have tried calorie restriction diets before, and was surprised that it’s easier to eat nothing than a little.