Hi Cyn, The numbers are general guidelines but will vary depending on many factors, such as activity level, insulin resistance, weight and more. There is no single magic number, just conventional recommendations that are a good starting point. I will have a macro calculator coming soon that will help determine what is best for each person, but even then it’s an approximation. The only way to know for sure is to test. If keto is your goal, it’s usually best to start lower and then see if you can stay in ketosis when increasing.

Take a break from breakfast: If you’re not hungry, feel free to skip breakfast and just have coffee (with some milk if you want it). Many people find that within a few days of eating low-carb, high-fat meals, cravings and hunger decrease significantly. This can make it easy to skip a meal, perhaps especially breakfast. Skipping a meal is cheap, fast, and might increase the diet’s effectiveness for weight loss and diabetes. See intermittent fasting
A low-carb diet can be extremely effective for dropping excess fat, and studies show it may also help reduce the risk of insulin resistance and diabetes. As it eliminates foods we have a tendency to overeat (can you say bread basket?), you end up saving calories. And since carbs spike blood sugar, you'll have more stabilized blood glucose levels, too.

my children regularly make themselves smoothies, bacon (2 minutes in the microwave covered with kitchen paper), scrambled eggs with cheese in the microwave (mix 2 eggs, cheese, milk – 1 minute, stir, 30 seconds, stir, 30 seconds, stir). They used to moan and complain there are no cereals in the house, but they have learned to cook their own breakfasts and look for what ingredients we have rather than reach for a box of cornflakes