Baby weight struggles

So all I've ever heard was breastfeeding melts the baby weight away, and I believed that was true with my first, but this time it's made me so hungry that not only have I not lost the baby weight but I feel like I'm gaining. The hardest thing is that I want to diet and exercise again but I have to be so careful about not messing up my supply that I dont feel like I can do anything while I'm breastfeeding. I'm planning on going til shes 2years but I dont want to look like this that long 😔. Anyone else?