keep muscle

5'7". 45yo. 217lbs. 16%-18%bf MAX. Training 3yrs Looking to Recomp/Drop 15lbs of fat and hold onto as much muscle as possible. 80% of my extra weight is in my trunk. Legs are pretty cut up! They look good. I can see side striations on legs, quads, calves, are all cut. Trunk? That's where it's...