Is this amount of weight loss achievable in 6 weeks?

I am wanting to loose about 15 more pounds. Already lost 10. My plan is to run in the morning and do more cardio and Ab exercise in the afternoon. I paln on drinking much more water and cut down to 1 Coke a day. I know people say none but for me if I tell myself none I will want more if that makes since. I'm going to eat more vegetables and healthier foods. If I do all of this is it possible to loose 15 pounds in 6 weeks?
Is this amount of weight loss achievable in 6 weeks?
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