Trainning for my 1/2 marathon in Charlotte

Training right now is on and off for me. Right now I am training for three half marathons 2 in March and 1 in June. I can tell my training is really dependant on how much I eat and what I eat. Sometimes I do not eat enough and my legs would not turn over like I needed them to do. It caused me to stop because my legs would felt like rocks. That is not a good feeling especially when I have to be ready for my first 1/2 marathon on March 6th.