i struggle with this as well - i have a different outcome - staying in forward bend rather than ee - arms come thru rolling thru impact
the different drills i use - water bottle inside the right ankle - knock is over on downswing, 'bowler drill' drop your right leg back away from the target line - can bring that right leg closer to the left and turn out the toes - this will give you the feel of hips forward enough on the downswing and tucking hips, 12-16 inch long 6 inch diameter foam roller placed behind and slightly to the left of your left foot - insures you are pushing your left leg in the correct manor, last drill - an alignment stick thru a range bucket (or other device) you would angle it so that it's about an inch infront of that right knee parallel to the target line