I am a bit older than you (70), but, been battling the bulge since 50-55.
My advice, don't try anything too extreme, chances are, unless you have excellent will-power, you will not stick with it.
I keep my bulge under control, with a mix of exercise and eating reasonably sensibly.
I cycle 60 miles / week, do a bit of gardening, and, a bit of (brisk) walking.
Food wise, I stick to three meals a day (breakfast, lunch, dinner), no snacks.
I try to eat five portions of fruit/veg per day.
I avoid any packaged food with a fat content of more than 10% (check the label), only exception is mayonaise / Salad dressings which I use sparingly.
Have not given up the booze, but, have cut back on beer, Red Wine is good for you (that is my excuse).