Megan,
I have posted many other times promoting sublingual as easy and convenient way to take Estradiol. Initially, I was taking Estradiol twice daily at the start of my transition. Then once I was post op, I reduced to once daily, which was ok. But I felt that my HRT was lacking, especially in the evening hours.
I asked my Physician to prescribe a lower dose twice a day, just to even things out. Now I feel somewhat better emotionally and my breasts are tender again. I take that as a sign that this was a positive change for me. Actually, if I could arrange my daily activities for a convenient way to take my Estradiol three times a day, that would give me even more consistent blood levels.
Many of the girls who take their Estradiol by injection or patches have a very valid point in that their preferred route produces more consistent blood levels. I used to say that in the long run it made no difference how often you took Estradiol. Which is true. But now I am more aware of the subtle advantages of twice or even three times daily dosing.