I am about 85 days from my first ttc cycle in sept. I am 95/96 lbs (bmi 18.5) right now which is easy to maintain and can get down to 89/90 and still ovulate. When should I start dropping the lbs - in the cycle/weeks of right before my ttc cycle or more gradually further out? Plus I don't really exercise but I am walking the stairs more and wondering if I should drop that since I am not going to do the crazy exercise option. Any advice?