Well some guys experience changes really fast I assume because they started with the correct dose for them. Some experience changes too slowly because they were started with a too high or too low dose (too high can be converted back to estrogen).
For me I noticed downstairs growth after the first week. It wasn't what I was expecting growth to be like so I almost didn't notice it, but it stuck out more. I got the tingling too, and it's almost been sore I assume from growing so fast. It's taken a month for me to notice any hair changes. My mustache is a little darker and I have to shave a bit more frequently, and my leg/arm/belly hairs are getting darker and longer. Nowhere near where they should be but still definitely different. My voice cracked week two, but I haven't done a recording to compare pre-t to now so I dunno quite how much it has changed, but my girlfriend who basically devotes all her time to noticing pitch changes noticed it (she builds flutes). I feel like I have less energy, as apposed to what you say about more. Similar to natal guys going through puberty sleep a lot more, testosterone for us will make us tired at first.
Congrats on starting T!
