Starting my challenge to turn 6 kg fat to 3kg muscle

I'm 87,5 kg with fat%17. It's about 15kg of fat.

Goal 1st of June is 84 kg with fat% 11. This means dropping 6 kg of fat, but getting 3 kg of muscle at the same time. So challenge is to turn 6 kg fat to 3 kg of muscle.

I checked in to an aikido basics class. Nothing to do with the challenge, but might be fun...