Would gatorade at least 3 bottles a day prevent electorlytes being low enough and an addisons conformation when low cortisol has been confirmed?

Hard to say. If you suspect such an issue you should seek proper diagnosis and address management with the treatment team. Consumption of any product like Gateraid by someone whose hormone system is not managing their electrolyte balance can get into trouble quickly.Don't try to self manage something that could put you into the hospital an bad shape.