Congratulations on your new baby! I'm still nursing my 17month old but obviously not nearly as much or often as a newborn. I will tell you that for so many people nursing helped them lose weight - for me it was quite the opposite. It made me super hungry, and I craved carbs. Unfortunately I did not go for the healthy carbs such as brown rice and whole grain bread... I reached for the sugar, the cookies, the cakes, the donuts, the pasta etc. It created an addiction for me and I'm battling that right now.
Just wanted to say good luck, dieting was out of my capability for the first few months of my baby's life so I am no help there. I hope you find the plan that works for you.
"No matter how developed you are in any other area of your life, no matter what you say you believe, no matter how sophisticated or enlightened you think you are, how you eat tells all." - Geneen Roth