Try this. When articulating a note bend the tip of your tongue down. This will force the middle of your tongue up making the gap smaller. This construction of the air passage should create a bend. Try saying too while bending the tip of your tongue down.
Hope this helps.
Late reply, but how about pulling with the diaphragm into the throat, but hold the throat closed and then open with a blast, controlled blast. Like talking Jimmy Stewart the way he talks, if that reference isn’t to old. (It’s a wonderful life)