Yes, in that case, starting with calorie moderation is key. In fact, even if you don't do anything else, this alone should bring your weight down to managable l

Yes, in that case, starting with calorie moderation is key. In fact, even if you don't do anything else, this alone should bring your weight down to managable levels where you can start doing exercises that look injury-prone now. But exercise would make it much easier, because it releases dopamines, which makes you feel good, which lowers your food craving. (I'm not in my early twenties and I've been overwheight for the most of my life.)