[Lil Sis]

I think you have received excellent advice. The methods your father used are outdated. Trainers have learned new methods that work so much better.

It is like raising children, when I was a kid my mother used to beat my butt
But we now know hitting is not how we should teach ( displine) children. The same is true for dogs. If you hit -- you are teaching the dog to fear you not what you what them to do!

Also.....I hope you are using some type of no choke harness

Good luck