Weight loss before school starts?

Is it a reasonable goal to lose 1.7 pounds per week? I am currently 137 pounds and I want to be 120 pounds when school starts.. Which is in 10 weeks. I am 16, 5'4, and 137 pounds (already mentioned). Is this a reasonable goal? Will I be able to keep the weight off? I have a problem where I binge eat when I'm bored or sad but I'm working on it (not sure if that's relevant)

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