I think it's important to note that almost every step in transition takes a lot of time, so you must be patient. Getting on hrt is a big step for sure and congratulations! But be prepared that it will take time to start seeing tangible results from it. Don't be afraid to get started on some of the other aspects like makeup and clothing in the meantime.

That being said, (and this is also partially a personal gripe of mine,) don't be afraid to shop around for a good doctor. Far too many doctors are unwilling to give trans people proper dosages, either out of malice or ignorance, and this can make the process of second puberty much harder of a process than it should be. I hate to reference the infamous Dr. Powers (his personal views are pretty... Weird, to but it lightly. And a lot of doctors practically despise him), but I can't help but admire his patient-first attitude. Even though his personal opinions are kinda gross, he takes his patients seriously and does more in depth testing than any of the doctors I've had throughout my own transition. Too many doctors will give you a bare minimum dose that barely does anything for you and refuse to increase it, citing poorly researched statistics or basing it off of cis hrt which was never designed to induce a second puberty. Listen to your body, keep track of changes and when they happen, and be patient. But don't let a doctor gaslight you into thinking that things are happening when they're not.

And on that note, take some good before pics that you can compare yourself to down the line! It can really help when you're feeling down or feeling like things are too slow, to see how far you've come and what changes have actually happened.

I was feeling pretty frustrated about my transition progress up until earlier this year when I finally switched to injections and was taking a way higher dose. And now I can confidently say that my boobs show through my shirts. As it turns out, I don't think having sub 100 E levels is enough to actually start going through puberty. It did do some changes for sure, but they're basically nothing compared to how my body has changed since I managed to switch.