Mavieen,
As I come to realize because the UK and Australia and Provinces in Canada require Blanchard's Crackpot 1 Year RLT for HRT, DIY really is the only option for them.
In this respect the US is FAR ahead of the UK and other places, with the realization of gender specialists that doing the RLT is unrealistic and potentially extremely damaging to delay hrt for that long and especially to throw the person into a RLT for HRT. Especially when the case for many transgender people may never want to go full time but HRT is beneficial (which is in the SoC).
So for the people in these countries DIY is a better option than waiting around or turning their life upside down with a RLT just for hormones.
As much as I hate to say this, with more insurance companies covering HRT for trans people in the US, or at least looking the other way, DIY is not necessary here. We have fewer hoops to jump through. Three months of therapy is very reasonable, and I know many people in the US do not even have to go through that to get their letter. The reality is for HRT, the US is SIGNIFICANTLY more trans-friendly.
In the UK and other places...the reality is DIY is really the only realistic option because the barriers they put up for HRT are absurd, and outdated. That is why I am not surprised with the amount of people here from the UK, Canada, and Australia who ultimately went the DIY track.
There needs to be significant changes to their system, any ideas of Blanchard need to be thrown out in these countries. US medical system despite all its flaws, has at least caught on to how to administer HRT to trans people right and when to do it.
With that being said, if you are in the US. Just wait for your letter. You will get it when the time is right for you to start, if YOU feel the time is right to start.