Moving your saddle forward will open your hip angle, which should allow you to get a little lower. You have to move your elbows forward the same amount as you move your saddle, i.e. longer stem and probably a 17° stem mounted so it's level. If your current seat post has set-back, trade for a zero setback post, get saddle even further forward.
What it's supposed to look like. Notice their leg extension - your saddle height is fine. But notice where their butts are w/r to their bottom brackets - they're perched on the saddle nose. Opening the hip angle is how you get low and still breathe. As you move your saddle forward, you'll have to raise it slightly