Listen to your body and try and eat the right, healthy foods as much as possible. Estradiol, in and of itself, according to the scientific literature, helps keep the weight off the waist while indirectly, through increasing (upregulating) progesterone receptors, increases how much fat is stored in the glutes, thighs, breasts and other regions, this is why women gain so much fat during pregnancy and these are fat stores for the baby, for when the mother will breastfeed. This, at least, is my understanding.
I personally don't adhere to hypocaloric approach as it is frustrating mentally, can be hard to keep up, makes you terribly hungry and tired, irritable and can, over time, rob you of nutrients you need. My 2 cents.
In addition, it's possible too little testosterone can result in excess weight gain so keeping T at a reasonable level *may* help.