New doctor, new dosage. Questions

So, I recently moved across the country days after starting HRT. My starting dosage was 4mg E and 50 mg Spiro.

Fast forward a month, and I have found a new doctor in my new state. He upped my Spiro dose to 100mg, but took me off E temporarily until I quit smoking cigarettes (went off for about a week, in the end). So, today I go in to see him again, I got my E back, but he has me down to 2mg. Whatever, he's the doctor.

However, his reasoning was a little odd to me. He said he did some reading over the holidays, and read that up estrogen levels more slowly leads to better breast growth. High estrogen levels too quickly can lead to faster breast growth, but with weird hard boobs. Whereas stepping estrogen levels up over time leads to more natural feeling breast development. At least, that's what he said.

So, basically, my question is has anyone else heard of this theory? It's just a bit odd to me that I have never heard this before. Especially considering what a frequent topic of conversation breast growth seems to be around here.

Another question I have, that's sort of related: early in transition, how frequently should a hormone panel be done? Is once every three months sufficient to tweak dosages?