Had wide shoulders and ribs and was very underweight when I was younger, I could feel the pain from my ribs breaking through my skin keeping me up at night, I had to force myself to eat because it got in the way of my life
This is purely anecdotal but you really won't want it when you get there, especially if you're still growing and there's all kinds of risks like scoliosis and flared ribs etc.
Consider making high volume but low calorie meals, the process of both making and eating it is fun and you will find yourself full but still losing weight, dishes I can recommend are southwest grilled salmon salad

, chicken and broccoli, veggie burgers, eggs, etc. GL