Having a balanced diet is also essential, make sure to keep track how much calories you want to consume and how much you want to burn, to reduce one pound, you need to burn 3500 calories plus you have to keep in account how much weight you lose, loose too much in a short amount of time can also prove vital for health, as soon as you start eating other foods you might put that weight back on, if you're doing vigorous exercise involving heavy weight lifting and such, you may also gain muscle mass which can also increase weight, if you feel your clothes are fitting you well then you're making success. There are also two types of fat, visceral fat which cannot be seen and surrounds your Internet organs, and the other fat, which can be touched using your hands, around the abdominal or other area of your body, if it's going of well and you're in shape, then you're asking progress.
Make sure you change and adapt other forms of excercise not just stick to one, the plank or the side plank are great to execrcise and work a lot of muscles in your body which burn more calories, you can check the web for various other workouts you can adapt to, that might also help.
Viteman C also boosts up insulin levels and reduces fat as well as whole grain and nuts, foods which contain a lot of fibre are good to adapt with, make sure to ditch other surgery drinks, and water only, which keeps the metabolism high and running.