Here's a few suggestions:

Calculate your basic metabolic rate using one of the tools in the Tools forum. (It will probably be higher than 1,300.) Subtract about 15-20% from that, and you have your target calorie rate in order to create a deficit. 1,300 calories is pretty low, and if you count calories and portions carefully, you can be sure that you're taking in more than you think you are.

Reinforce that deficit with weight training (which burns an extra 75 calories at rest for every pound of muscle you put on) and at least half an hour of aerobic high-intensity training 3x or more a week.

If you make sure that you take in approximately 500 or less calories a week than you burn off, you should lose roughly around a pound of weight in that time period.

Try not to keep your calorie intake too low, or it will send your system into starvation mode and prevent your body from burning fat effectively.

You should see some results.

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