It's not just you. Although I'm not as far ahead in transitioning, when I first began to realize I'm trans I dove headfirst into it all - researching trans things, buying men's clothes, binding, cutting my hair really short, and it was all fine until I began to feel utterly overwhelmed and terrified because I'm not good at changes (even internally/introspectively) happening too fast.

Everything was happening very quickly until I felt like I no longer recognised myself nor had I given myself enough time to wrap my head around it all.

I gave myself a month or two to totally try to step away from it all until I could have enough time to unconsciously process the changes/progress. I thought maybe I wasn't trans, but it turns out that I am, I'm just easily overwhelmed, and I went back to figuring myself out and taking steps forward after that brief time.

I understand why you need to do some of these things quickly and I wish you best of luck. I also understand though that sometimes you need to take things slow and if it's all too fast it can feel like too much. Good luck though :)