I'm still pre E, but I'll recommend that you start as many things as possible (doctors appointments, speech therapist, new wardrobe) and just slow down/ delay/cancel the ones you don't feel ready for.
(This is written assuming you're in a place with good healthcare access, but long waits. Be certain before you actually start any medical changes)
I've very much been in the same boat. I'm afraid that no one will come to you and go "here, this is exactly what to do, we're doing it now and then you'll be done transitioning".
The closest to that I've found is voice training, but that's mainly because I didn't realise how uncomfortable I was with my voice until I had to pick up the phone and present with my chosen name and voice alone.