Is it recommended to eat once a day to lose weight?

No. By skipping meals, your body will go into a starvation type of slow metabolism that will make it harder to lose weight. More frequent small meals, cutting back on calories, coupled with vigorous exercise is the key to losing weight. If you eat 750 calories less than you burn each day you should lose 1-1/2 pounds per week.
No. Make sure you exercise at least 30 minutes a day, don't skip meals, avoid soda, juice, dairy, alcohol and fried foods. Eat a healthy well balanced diet! also water, organic vegetable broth, green leafy vegetables, natural pickles, apples are great to fill you up so you dont feel hungry and they are very low in calories.