Intermittent fasting. Easy Peasy.
I do not eat or drink anything other than water, black coffee, or unsweet tea between 11 PM and 4:30 PM 6 days a week.
One day cheat.
Got me down to 230, easy to stay there. No extra exercise or anything. I am back in the gym some to assist my knees and shoulders in range of motion.
My only caution with self-designed weight loss regimens is to make sure you have your blood tested for at least the Basic Metabolic Panel which checks 8 or so basic elements/electrolytes in your system. I lost 40 pounds on a self-designed diet that basically stripped all the sodium out of my blood and nearly killed me. It was so low when they took me to the hospital they were thinking I was gonna die.