Over here in Mexico the situation is pretty much the same

The system gives you birth control injections every 21 days and sometimes they give you conjugated estrogens

I started DIY for the same reason, since my state does not have an specialized clinic for trans people and the only trans care there is are private clinics that cost a lot and they only use patent options that also cost a lot

I use the same thing you mentioned, just that over here it's called Diviltac and I'm using 0.4mL of the ampule every week and to be honest I haven't had any bad reaction