15 lbs in 3 months shouldnt be that difficult. and it is much more about the diet than the exercise. You cant exercise away bad eating.
if yrou goal is fat loss i suggest you ditch the berries in the shake for most days. As fair as hair loss, its not about the carbs as much as micro nutrients in my experience. take a good multi vitamin/mineral. I would nto suggest counting calories either. If you read Robb wolfs book he mentioned our bodies were designed to run on a calorie surplus.