Hello,

My name is Vanya. I'm 21 years old. I suffered from low testosterone and through some tests, it is shown that my prenatal oestrogen was extremely high. In addition, i had very late onset puberty at 15.

What difference will these things have on my transition from male to female?

What is a timeline of change for this?

How long until the process is pretty much completed?

Well it's probably helped atleast in not masculine you as much so far, and you are starting nice and young so you should have good effects.
Its all subtle changes in the beginning but you will see changes beginning in the first month probably and you will be pretty much maxed out on changes in three years. Changes happen all through live via our hormones and the passage of time. This is no different for cis people than it is so for trans people.
And all changes will also rely on genetic characteristics too.
The surgical side of the story, is pretty much down to you and where you live.
Goodluck