Precardio fat loss?
Caloric deficit in 200 cal increments every 2-3 weeks. If you shock your body into mega deficit your metabolism will react and slow down.
Take a tiered approach and when you plateau slowly taper down the calories.
Amazon search:
Food Scale - $9.99
Measuring cup set - $7.89
Quit looking for supplements or PEDs- calories in vs calories out has always worked since well, forever.