Can Estradiol Be Started After Hysterectomy?

I had a hysterectomy in my 30s. History of ovarian surgery in my 20s. I m mid 40s and have a shift in weight to my abdomen. I eat low carb low sugar diet and exercise. No weight loss. I m ready for HRT. Should I start with estradiol only or start with estratist hs? I m frustrated and fatigued. I m on armour thyroid too.