When cutting calories, most people can expect to lose roughly 0.5 to 1% of their weight each week, which translates to a 1-2% decrease in fat per month. Of course, you will also see changes in water weight and likely reduce some muscle mass in the process, so the scale isn’t the best indicator of how well you’re doing. A body composition analysis test is the easiest way to determine your body fat percentage from the start and track your changes in fat storage over time.
Whatever you do, don’t try to rush the process. Starving yourself and working out for hours on end to see results quickly is only going to set you up for failure right from the start. Choose an approach that is easy to maintain long-term and be patient.
You can help speed up the process by trying to build muscle at the same time, by incorporating some strength training into your abs fitness routine. Lean muscle supports your metabolism and makes it a bit easier to burn fat without having to go hungry.
And remember, getting abs won't happen overnight, and how long it really takes to reach your goals depends on how focused and consistent you can be. Don't focus on being perfect, aim to be patient and consistent.