Hi 👸🏽’s! 👋🏽👋🏽👋🏽

Looking for some advice. I’m needing to lose about 15 pounds of fat which I carry mainly around my midsection. Do I focus first on weight loss, then muscle gain once I’m at my goal weight. Or do I work on both simultaneously? My metabolism has slowed down so losing weight is taking longer than it has in the past. TIA ☺️