Are you willing to skip a meal. Don’t restrict your calories…just keep a cap on carbs and protein (like what others said above), but eat fat to satiety.
So, the idea is this…pick a meal to skip…like breakfast or lunch. Eat as much food as you would have with three meals a day, but in the two meals only. Do this for a day or two to test your “fasting” abilities. Does it work? Do you freak out in hunger, or are you ok with that? If it felt ok, then plan on doing it for a longer period. Like a few weeks, and see how it goes. This will likely “push” your body into more fat burning mode, because you create a bit of a fasting window, and eating a ketogenic diet forces your body to burn fat, and not glucose for majority of your energy.
Little baby steps. Testing new strategies, and seeing what works, is the best way to outsmart your body.
Good luck with your efforts. I hope you stay in touch and keep us informed on how your are doing.