Weight / Fat loss

I have to shift 3 kilos in 6 weeks in order to be under the weight for a compnay skydive (weight limit 14.5stone with clothes wtf?). Is dieting - eating low carb high lean protein plus lots of running the best way to do this?
Is it possible? This could be incredibly embarassing

Running is the king of fat burners.

You need to satisfy the hunger it will bring though. Protein shakes are a start. But dont overdo them. Cardboard?