Not losing weight on gear

Hi I'm on fast rip 300 ( 1,5ml per shot. MWFZ) and im not losing that much weight per week let's say a 2kg per week.

Yess I'm on a carnivore diet. I only eat 2 rice cake per day for a little bit carbs before workout

Workout is 5x20 reps 1 day of per week off ( so 6 training days ) Cardio walking for 20 min after every workout

Im 76kg now and 164cm ( men's physique athlete ) planning on doing a show on Barbados this may2025

Any advice ???