how I’ve not fixed a slice by improving accuracy and ball strike quality?
What you have done is drop your right foot back 4-5 inches which essentially changes your aim 30-40 yards to the right.
So now your out to in swing which was 30-40 yards left is now straight because you are aiming 30-40 yards right.
Does that make sense?
And let me say as clear as I can, DO NOT CHANGE IT.
Trying to fix an out to in swing is very very difficult and you just don't have the time.
Keep the right foot where it is and let the swing go where it wants and work at 50-60 yards out.
Have you heard of the clock face technique?