While there are some problems with the turns shown in your video, I see a need also to develop balance -in addition to what you are doing now.
I'm also new and learning as you are, but I agree with this. I think you're not counter-balanced enough based on your inside hip, arm and shoulder
positions relative to the stance side.
I would re-read geoffda's post carefully again (I'm sure you have many times);
if you don't regain fore-aft balance in transition by pulling back during the release, then
it becomes harder to transfer balance and develop early counter-balance during the transition as well; it's logical that imbalance in any direction
will impact the other movements.
I believe that pullback during the release and working on early transfer and counter-balance will also help with outside leg extension
as the turn develops.