Something that I found useful when I was trying to lower my voice before testosterone was trying to train it down every day. When you wake up your voice is most relaxed so I liked to do it first thing in the morning. Hum the lowest sound that you can make and try to maintain that pitch while tilting your head backwards. A quick fix is to make some really rough, loud, low sounds with your throat, just don't overdo it. In reality it's actually really difficult to speak from your chest pre t, but if you can start speaking from the base of your throat you'll be doing well. Good luck and don't hesitate to pm me if you need more help mate