I am M2F and took the big leap to full time as girl the summer before I started high school. After years of counseling/therapy, I started blockers when I was 13 and was never that big as a guy so haven't had trouble passing and before making the leap to full time I was mostly dressing as girl at home. and before I made the leap my mom had taken me out dressed as girl like to go shoping so I was pretty comfortable when I went full time especially since we had moved and no one knew me as a guy. Still it hasn't always been easy. Like that first day of school I was scared shitless. Looking for others going through this to chat with and maybe help each other.
Glad to have you! There is a broad spectrum of experience here, so I suspect there will be those who can relate to your story.
Also, I would encourage you to complete your Profile page as it helps to get people to know you and what’s going on.