I am 6'3 and was 260 3 yrs ago and lost 40 in 18 months. I have kept it off. Intermittent fasting, clean diet and full-body weight lifting exercises. Even at age 50, this combination increased metabolism and at one point I was losing a pound a day when biking 17 miles every other.
Sugar is a killer - especially around the mid section.
The lost weight eased problems with my lower back and allowed me to stay on the bike longer.
Great job, keep it up.